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BetaB4 May 13th 09 08:24 PM

Charging the battery -- how long is okay?
 
I have a battery charger for charging the 12-volt boat battery. The charger
has two settings -- 2 amps or 6 amps.

My question is, if I have the charger set at 2 amps, how long is it okay for
me to leave the charger on? My boat is in a garage at a location that I
usually only get to about once a week or so. Is it okay if the charger is
left on at the 2-amp setting for say, a week?



HK May 13th 09 08:29 PM

Charging the battery -- how long is okay?
 
BetaB4 wrote:
I have a battery charger for charging the 12-volt boat battery. The charger
has two settings -- 2 amps or 6 amps.

My question is, if I have the charger set at 2 amps, how long is it okay for
me to leave the charger on? My boat is in a garage at a location that I
usually only get to about once a week or so. Is it okay if the charger is
left on at the 2-amp setting for say, a week?



No. Not unless the charger shuts down automatically when the battery is
charged, and then, not unless you have tested that feature.

jim78565 May 13th 09 08:54 PM

Charging the battery -- how long is okay?
 
HK wrote:
BetaB4 wrote:
I have a battery charger for charging the 12-volt boat battery. The
charger has two settings -- 2 amps or 6 amps.

My question is, if I have the charger set at 2 amps, how long is it
okay for me to leave the charger on? My boat is in a garage at a
location that I usually only get to about once a week or so. Is it
okay if the charger is left on at the 2-amp setting for say, a week?


No. Not unless the charger shuts down automatically when the battery is
charged, and then, not unless you have tested that feature.


Will wonders never cease. Harry actually answered a boating question
correctly.

[email protected] May 13th 09 09:20 PM

Charging the battery -- how long is okay?
 
On May 13, 3:54*pm, jim78565 wrote:
HK wrote:
BetaB4 wrote:
I have a battery charger for charging the 12-volt boat battery. *The
charger has two settings -- 2 amps or 6 amps.


My question is, if I have the charger set at 2 amps, how long is it
okay for me to leave the charger on? *My boat is in a garage at a
location that I usually only get to about once a week or so. *Is it
okay if the charger is left on at the 2-amp setting for say, a week?


No. Not unless the charger shuts down automatically when the battery is
charged, and then, not unless you have tested that feature.


Will wonders never cease. Harry actually answered a boating question
correctly.


That's because he's seen that answer here before! Mechanical engineer
my ass!

Reginald P. Smithers III, Esq.[_5_] May 13th 09 10:50 PM

Charging the battery -- how long is okay?
 
jim78565 wrote:
HK wrote:
BetaB4 wrote:
I have a battery charger for charging the 12-volt boat battery. The
charger has two settings -- 2 amps or 6 amps.

My question is, if I have the charger set at 2 amps, how long is it
okay for me to leave the charger on? My boat is in a garage at a
location that I usually only get to about once a week or so. Is it
okay if the charger is left on at the 2-amp setting for say, a week?


No. Not unless the charger shuts down automatically when the battery
is charged, and then, not unless you have tested that feature.


Will wonders never cease. Harry actually answered a boating question
correctly.


Actually, if any of the boating mags run an article about a subject, he
can understand the basics.
--
Reginald P. Smithers III, Esq.

This Newsgroup post is a natural product. The slight variations in
spelling and grammar enhance its individual character and beauty and in
no way are to be considered flaws or defects

Eisboch[_4_] May 14th 09 12:35 AM

Charging the battery -- how long is okay?
 

"BetaB4" wrote in message
...
I have a battery charger for charging the 12-volt boat battery. The
charger has two settings -- 2 amps or 6 amps.

My question is, if I have the charger set at 2 amps, how long is it okay
for me to leave the charger on? My boat is in a garage at a location that
I usually only get to about once a week or so. Is it okay if the charger
is left on at the 2-amp setting for say, a week?




No.

Get yourself a 3 stage charger. Bulk, absorption and float modes.
They are inexpensive ..... a 10 amp version costs about 30 bucks.

It will automatically charge and then maintain the charge as required for as
long as your want and will not overcharge, causing water loss.

Those old fashioned voltage controlled chargers should be taken off the
market. The new types are cheap and work much, much better.

Eisboch




Calif Bill May 14th 09 01:13 AM

Charging the battery -- how long is okay?
 

"BetaB4" wrote in message
...
I have a battery charger for charging the 12-volt boat battery. The
charger has two settings -- 2 amps or 6 amps.

My question is, if I have the charger set at 2 amps, how long is it okay
for me to leave the charger on? My boat is in a garage at a location that
I usually only get to about once a week or so. Is it okay if the charger
is left on at the 2-amp setting for say, a week?


Get an automatic charger that shuts off when the battery is full. I also
use a wall timer and set it for 12 hours and remove the "ON" clip and
manually turn on the timer and 12 hours later it turns off, preventing the
charger from running until you reset it. Before I had the auto timer I
cooked a couple of batteries. The Automatic model I have now, does not need
the timer.



Eisboch[_4_] May 14th 09 01:25 AM

Charging the battery -- how long is okay?
 

"Eisboch" wrote in message
...

"BetaB4" wrote in message
...
I have a battery charger for charging the 12-volt boat battery. The
charger has two settings -- 2 amps or 6 amps.

My question is, if I have the charger set at 2 amps, how long is it okay
for me to leave the charger on? My boat is in a garage at a location
that I usually only get to about once a week or so. Is it okay if the
charger is left on at the 2-amp setting for say, a week?




No.

Get yourself a 3 stage charger. Bulk, absorption and float modes.
They are inexpensive ..... a 10 amp version costs about 30 bucks.

It will automatically charge and then maintain the charge as required for
as long as your want and will not overcharge, causing water loss.

Those old fashioned voltage controlled chargers should be taken off the
market. The new types are cheap and work much, much better.

Eisboch


I should add, however,

The only disadvantage I've seen with some of the "smart", 3 stage chargers
is that if your battery is really run down some of them will kick off and
give you an error code indicating that it cannot charge. This is usually
when the battery has been depleted to the point where the voltage is 5 or 6
volts or less.

It doesn't mean the battery cannot be recovered, however. In this case,
the old fashioned, voltage controlled chargers have a purpose. Charge it
for about 1/2 hour to an hour with the old fashioned charger, then switch
over to the smart charger. The old fashioned charger will raise the
battery potential high enough that the microprocessor controlled smart
charger can be .... smart.

Eisboch


BetaB4[_2_] May 14th 09 03:35 AM

Charging the battery -- how long is okay?
 
Thank you all. Well, I sure am glad I posted the question. I am now in the
middle of looking online for battery chargers to see what is available, what
they cost, where to buy them, etc. Over the next few days, I'll check some
auto parts stores to see what hey sell. Obviously, I need a charger that I
can leave on and not have to worry about the battery being overcharged.

"BetaB4" wrote in message
...
I have a battery charger for charging the 12-volt boat battery. The
charger has two settings -- 2 amps or 6 amps.

My question is, if I have the charger set at 2 amps, how long is it okay
for me to leave the charger on? My boat is in a garage at a location that
I usually only get to about once a week or so. Is it okay if the charger
is left on at the 2-amp setting for say, a week?



Wayne.B May 14th 09 04:52 AM

Charging the battery -- how long is okay?
 
On Wed, 13 May 2009 22:35:11 -0400, "BetaB4"
wrote:

Thank you all. Well, I sure am glad I posted the question. I am now in the
middle of looking online for battery chargers to see what is available, what
they cost, where to buy them, etc. Over the next few days, I'll check some
auto parts stores to see what hey sell. Obviously, I need a charger that I
can leave on and not have to worry about the battery being overcharged.


The cheapest solution if you already have a 2 amp charger is to put an
automatic timer on it as gfretwell suggested.


Tim May 14th 09 05:24 AM

Charging the battery -- how long is okay?
 
On May 13, 2:24*pm, "BetaB4" wrote:
I have a battery charger for charging the 12-volt boat battery. *The charger
has two settings -- 2 amps or 6 amps.

My question is, if I have the charger set at 2 amps, how long is it okay for
me to leave the charger on? *My boat is in a garage at a location that I
usually only get to about once a week or so. *Is it okay if the charger is
left on at the 2-amp setting for say, a week?


My question is this. Why do you feel you need a battery charger on the
boat? If the charging system is good and there is no electrical draw
(leakage) your boat battery should stay up for the whole summer. My
daughter has been in college all year and her 2003 Pontiac GrandAm has
sat for literally three months at a time, and has always started like
new.

I have two boats. both are mercruisers with Delco alternators. I pull
the batteries out for witer storage and will take them in the house
where they stay at a 68 degree (+/-) for the winter. Well, I may take
an older one and put it in my tractor to blade snow in the winter,
but....

In the spring I put them on a charger for a couple hours then install
them in the boats and that's all. when I park the boat[s] I make sure
everything is shut off and the batteries stay up all season.

Wayne.B May 14th 09 06:29 AM

Charging the battery -- how long is okay?
 
On Wed, 13 May 2009 21:24:13 -0700 (PDT), Tim
wrote:

My question is this. Why do you feel you need a battery charger on the
boat? If the charging system is good and there is no electrical draw
(leakage) your boat battery should stay up for the whole summer.


That's fine for engine starting batteries that never get discharged to
any real depth and are otherwise in good condition. "House"
batteries and trolling motor batteries rarely see enough run time on
the boat to be completely recharged however. Fully recharging them at
home or dockside will greatly extend their life as long as they don't
get over charged in the process.


Richard Casady May 14th 09 12:37 PM

Charging the battery -- how long is okay?
 
On Wed, 13 May 2009 23:52:55 -0400, Wayne.B
wrote:

On Wed, 13 May 2009 22:35:11 -0400, "BetaB4"
wrote:

Thank you all. Well, I sure am glad I posted the question. I am now in the
middle of looking online for battery chargers to see what is available, what
they cost, where to buy them, etc. Over the next few days, I'll check some
auto parts stores to see what hey sell. Obviously, I need a charger that I
can leave on and not have to worry about the battery being overcharged.


The cheapest solution if you already have a 2 amp charger is to put an
automatic timer on it as gfretwell suggested.


Go to the thrift store and get a 50milliamp 12v power supply for a
calculator or whatever. One of those cubes that plugs in the wall.
In a week, 50ma comes to some 6 AH, not enough to cook the battery.
If you add water once a week, it should be all right. It would be
better to get a smart charger.

Casady

Eisboch[_4_] May 14th 09 12:55 PM

Charging the battery -- how long is okay?
 

"Richard Casady" wrote in message
...
On Wed, 13 May 2009 23:52:55 -0400, Wayne.B
wrote:

On Wed, 13 May 2009 22:35:11 -0400, "BetaB4"
wrote:

Thank you all. Well, I sure am glad I posted the question. I am now in
the
middle of looking online for battery chargers to see what is available,
what
they cost, where to buy them, etc. Over the next few days, I'll check
some
auto parts stores to see what hey sell. Obviously, I need a charger that
I
can leave on and not have to worry about the battery being overcharged.


The cheapest solution if you already have a 2 amp charger is to put an
automatic timer on it as gfretwell suggested.


Go to the thrift store and get a 50milliamp 12v power supply for a
calculator or whatever. One of those cubes that plugs in the wall.
In a week, 50ma comes to some 6 AH, not enough to cook the battery.
If you add water once a week, it should be all right. It would be
better to get a smart charger.

Casady


I've had boats and RV's with the old school, voltage controlled chargers and
the newer, 3 stage smart chargers.
The ferro-resonant type used to keep big boat batteries charged (multiple
8-D's) also have a nasty habit of cooking the batteries if you don't keep a
watchful eye on the water. For many years the newer, switching power
supply "smart" chargers just weren't big enough (current wise) for this
application.

But over the past few years the 3 stage smart chargers have been improved
and increased in capacity.
We have a little 2005 Sprinter based RV built by Pleasure-Way.
Pleasure-Way builds RV conversions with an excellent quality reputation and
use top shelf components. The "smart" battery charger in it has kept the
original 2005 house battery in excellent, like new condition and I've never
had to add water to it in 4 years.
With the older type chargers, I'd have certainly had to replace the house
battery by now.

Eisboch


Tim May 14th 09 01:01 PM

Charging the battery -- how long is okay?
 
On May 14, 12:29*am, Wayne.B wrote:
On Wed, 13 May 2009 21:24:13 -0700 (PDT), Tim
wrote:

My question is this. Why do you feel you need a battery charger on the
boat? *If the charging system is good and there is no electrical draw
(leakage) your boat battery should stay up for the whole summer.


That's fine for engine starting batteries that never get discharged to
any real depth and are otherwise in good condition. * "House"
batteries and trolling motor batteries rarely see enough run time on
the boat to be completely recharged however. *Fully recharging them at
home or dockside will greatly extend their life as long as they don't
get over charged in the process.


True, Wayne, but well, he's never mentioned the boat type options
etc.

But what I was seeing in his OP was that he was panning on having a
charger on a battery 24/7 because he was afraid he'd get to his boat
and the battery would be 'mystically' drained. Well, maybe not
"mystically", But giving the impression that there was a natural
process that boats needed to have chargers on them at all times.


Maybe I'm geting carried away and trying to read way to much
betweenthe lines, but I've seen that thought process concerning
batteries and baots on here before.

either way though, it sure beats the political foolishness.

jim7856 May 14th 09 02:15 PM

Charging the battery -- how long is okay?
 
Eisboch wrote:

"Richard Casady" wrote in message
...
On Wed, 13 May 2009 23:52:55 -0400, Wayne.B
wrote:

On Wed, 13 May 2009 22:35:11 -0400, "BetaB4"
wrote:

Thank you all. Well, I sure am glad I posted the question. I am
now in the
middle of looking online for battery chargers to see what is
available, what
they cost, where to buy them, etc. Over the next few days, I'll
check some
auto parts stores to see what hey sell. Obviously, I need a charger
that I
can leave on and not have to worry about the battery being overcharged.

The cheapest solution if you already have a 2 amp charger is to put an
automatic timer on it as gfretwell suggested.


Go to the thrift store and get a 50milliamp 12v power supply for a
calculator or whatever. One of those cubes that plugs in the wall.
In a week, 50ma comes to some 6 AH, not enough to cook the battery.
If you add water once a week, it should be all right. It would be
better to get a smart charger.

Casady


I've had boats and RV's with the old school, voltage controlled chargers
and the newer, 3 stage smart chargers.
The ferro-resonant type used to keep big boat batteries charged
(multiple 8-D's) also have a nasty habit of cooking the batteries if
you don't keep a watchful eye on the water. For many years the newer,
switching power supply "smart" chargers just weren't big enough (current
wise) for this application.

But over the past few years the 3 stage smart chargers have been
improved and increased in capacity.
We have a little 2005 Sprinter based RV built by Pleasure-Way.
Pleasure-Way builds RV conversions with an excellent quality reputation
and use top shelf components. The "smart" battery charger in it has
kept the original 2005 house battery in excellent, like new condition
and I've never had to add water to it in 4 years.
With the older type chargers, I'd have certainly had to replace the
house battery by now.

Eisboch


Water usage seems to be a good measure of proper charging. My old camper
used almost a quart a month in the 2 golf car batteries. It had a
supposedly smart charger that switched modes and when charged it
maintained 13.2V BUT and,a Big BUT, every 24 hours it automatically
switched to desulfate mode (16V) for an hour. I never replaced the
batteries in the 7 years I owned it but I had to be vigilant about
checking the water.
My new camper Maintains the batteries including the starting battery at
13.2V and I might use a couple of ounces of water.
Both units were in converter/chargers.

Why don't they design chargers to charge to 14 to 14.5V and maintain
that voltage, as car alternators do?

BetaB4 May 14th 09 02:28 PM

Charging the battery -- how long is okay?
 
Tim wrote:

My question is this. Why do you feel you need a battery charger on the
boat?


I probably should have explained that I have a 13-foot aluminum boat
with a 9.9 HP gas engine and a 12-volt electric motor. I bought the boat
about a year ago and I have only used it a few times so far using the
electric
motor. So, when I take the boat out and use the electric motor, I need to
recharge the battery when I get home.



Don White May 14th 09 02:45 PM

Charging the battery -- how long is okay?
 

"BetaB4" wrote in message
...
Tim wrote:

My question is this. Why do you feel you need a battery charger on the
boat?


I probably should have explained that I have a 13-foot aluminum boat
with a 9.9 HP gas engine and a 12-volt electric motor. I bought the boat
about a year ago and I have only used it a few times so far using the
electric
motor. So, when I take the boat out and use the electric motor, I need to
recharge the battery when I get home.


I'm in a similar situation.
A 15' open aluminum boat with a 25 hp outboard with electric start.
I also have a MinnKota electric. When I first got the boat, I seemed to
discharge the battery fairly quickly, but the PO warned me that there might
be a nick in the wire that travels to the fish finder/depth gague
transducer.
I slathered liquid electrical tape all over the wire, cleaned & tightened
the connections to the battery and all seems well.
I do recharge the battery after each trip when I get back home.



Vic Smith May 14th 09 04:54 PM

Charging the battery -- how long is okay?
 
On Wed, 13 May 2009 21:24:13 -0700 (PDT), Tim
wrote:

On May 13, 2:24Â*pm, "BetaB4" wrote:
I have a battery charger for charging the 12-volt boat battery. Â*The charger
has two settings -- 2 amps or 6 amps.

My question is, if I have the charger set at 2 amps, how long is it okay for
me to leave the charger on? Â*My boat is in a garage at a location that I
usually only get to about once a week or so. Â*Is it okay if the charger is
left on at the 2-amp setting for say, a week?


My question is this. Why do you feel you need a battery charger on the
boat? If the charging system is good and there is no electrical draw
(leakage) your boat battery should stay up for the whole summer. My
daughter has been in college all year and her 2003 Pontiac GrandAm has
sat for literally three months at a time, and has always started like
new.

I've got a '93 Grand Am and a '90 Corsica with parasitic draws.
The Corsica has be started at least every couple weeks to charge
up, and the Grand Am is good for at least a month.
Not a big enough deal for me to find out what's wrong.

--Vic

[email protected] May 14th 09 06:31 PM

Charging the battery -- how long is okay?
 
On May 14, 11:54*am, Vic Smith
wrote:
On Wed, 13 May 2009 21:24:13 -0700 (PDT), Tim
wrote:





On May 13, 2:24*pm, "BetaB4" wrote:
I have a battery charger for charging the 12-volt boat battery. *The charger
has two settings -- 2 amps or 6 amps.


My question is, if I have the charger set at 2 amps, how long is it okay for
me to leave the charger on? *My boat is in a garage at a location that I
usually only get to about once a week or so. *Is it okay if the charger is
left on at the 2-amp setting for say, a week?


My question is this. Why do you feel you need a battery charger on the
boat? *If the charging system is good and there is no electrical draw
(leakage) your boat battery should stay up for the whole summer. My
daughter has been in college all year and her 2003 Pontiac GrandAm has
sat for literally three months at a time, and has always started like
new.


I've got a '93 Grand Am and a '90 Corsica with parasitic draws.
The Corsica has be started at least every couple weeks to charge
up, and the Grand Am is good for at least a month.
Not a big enough deal for me to find out what's wrong.

--Vic- Hide quoted text -

- Show quoted text -


Usually, nothing is wrong. Modern cars with computers have a small
draw for things like the stereo, electric seat memory, clock,
computer, etc.

Vic Smith May 14th 09 07:02 PM

Charging the battery -- how long is okay?
 
On Thu, 14 May 2009 10:31:55 -0700 (PDT), wrote:



Usually, nothing is wrong. Modern cars with computers have a small
draw for things like the stereo, electric seat memory, clock,
computer, etc.


Probably the case with the Grand Am, but the Corsica is bare bones and
loses the juice too fast.
Besides, it loses it much faster when it's been wet outside.
Maybe I'll put a meter on it and start pulling fuses when I get the
gumption.

--Vic

DK May 15th 09 12:40 AM

Charging the battery -- how long is okay?
 
Don White wrote:

I'm in a similar situation.
A 15' open aluminum boat with a 25 hp outboard with electric start.
I also have a MinnKota electric. When I first got the boat, I seemed to
discharge the battery fairly quickly, but the PO warned me that there might
be a nick in the wire that travels to the fish finder/depth gague
transducer.
I slathered liquid electrical tape all over the wire, cleaned & tightened
the connections to the battery and all seems well.
I do recharge the battery after each trip when I get back home.



You should have two batteries, dummy.

Calif Bill[_2_] May 15th 09 07:14 AM

Charging the battery -- how long is okay?
 

"BetaB4" wrote in message
...
Tim wrote:

My question is this. Why do you feel you need a battery charger on the
boat?


I probably should have explained that I have a 13-foot aluminum boat
with a 9.9 HP gas engine and a 12-volt electric motor. I bought the boat
about a year ago and I have only used it a few times so far using the
electric
motor. So, when I take the boat out and use the electric motor, I need to
recharge the battery when I get home.



Just use a cheap timer to charge the battery for 10-12 hours after you
return from fishing. The battery sitting unused will not discharge much.



BetaB4 May 15th 09 07:49 PM

Charging the battery -- how long is okay?
 
Calif Bill wrote:
"BetaB4" wrote in message
motor. So, when I take the boat out and use the electric motor, I
need to recharge the battery when I get home.


Just use a cheap timer to charge the battery for 10-12 hours after you
return from fishing. The battery sitting unused will not discharge
much.


About using a timer..., if I use a timer and the timer turns off the power
to the battery charger when the time is up, the battery charger will still
be set to "ON" and it will still be connected to the battery. Is there any
problem with that?

Somehow, that seems like the battery charger circuit will still be connected
to the battery, and the battery will discharge back through the battery
charger. On the other hand, if the battery charger switch is set to "OFF",
and the battery charger is left connected to the battery, I assume that the
circuit between the battery and the battery charger is disconnected.

But, with the timer approach, there is no way to switch the battery charger
switch to the "OFF" position at the end of the pre-set elapsed time.



Calif Bill[_2_] May 15th 09 08:54 PM

Charging the battery -- how long is okay?
 

"BetaB4" wrote in message
...
Calif Bill wrote:
"BetaB4" wrote in message
motor. So, when I take the boat out and use the electric motor, I
need to recharge the battery when I get home.


Just use a cheap timer to charge the battery for 10-12 hours after you
return from fishing. The battery sitting unused will not discharge
much.


About using a timer..., if I use a timer and the timer turns off the power
to the battery charger when the time is up, the battery charger will still
be set to "ON" and it will still be connected to the battery. Is there
any problem with that?

Somehow, that seems like the battery charger circuit will still be
connected to the battery, and the battery will discharge back through the
battery charger. On the other hand, if the battery charger switch is set
to "OFF", and the battery charger is left connected to the battery, I
assume that the circuit between the battery and the battery charger is
disconnected.

But, with the timer approach, there is no way to switch the battery
charger switch to the "OFF" position at the end of the pre-set elapsed
time.


Never saw a problem with the charger I used. I very much doubt any dumb
charger has any difference from it being off and no power to the charger.



BetaB4 May 15th 09 09:42 PM

Charging the battery -- how long is okay?
 
Calif Bill wrote:
"BetaB4" wrote in message

About using a timer..., if I use a timer and the timer turns off the
power to the battery charger when the time is up, the battery
charger will still be set to "ON" and it will still be connected to
the battery. Is there any problem with that?


Never saw a problem with the charger I used. I very much doubt any
dumb charger has any difference from it being off and no power to the
charger.


Now, I'm getting curious, so I tried a Google search on this question. Not
too much info so far, but here's what I did:

I did a Google search for "leaving an unplugged battery charger connected to
battery" (without the quotation marks). One of the results was this:

http://www.hydrolynx.com/_manuals/5030.pdf

It says,

"To remove the battery charger after the charging has been completed, unplug
the charger
from the power outlet before removing the terminal lugs or connector from
the battery.

Remove the terminal lugs from the battery terminals immediately. Do not
leave a fully

charged battery connected to an unplugged battery charger. In some
instances, the

charger will drain the battery through the power transformer."





jim7856 May 15th 09 09:49 PM

Charging the battery -- how long is okay?
 
BetaB4 wrote:
Calif Bill wrote:
"BetaB4" wrote in message
motor. So, when I take the boat out and use the electric motor, I
need to recharge the battery when I get home.


Just use a cheap timer to charge the battery for 10-12 hours after you
return from fishing. The battery sitting unused will not discharge
much.


About using a timer..., if I use a timer and the timer turns off the power
to the battery charger when the time is up, the battery charger will still
be set to "ON" and it will still be connected to the battery. Is there any
problem with that?

Somehow, that seems like the battery charger circuit will still be connected
to the battery, and the battery will discharge back through the battery
charger. On the other hand, if the battery charger switch is set to "OFF",
and the battery charger is left connected to the battery, I assume that the
circuit between the battery and the battery charger is disconnected.

But, with the timer approach, there is no way to switch the battery charger
switch to the "OFF" position at the end of the pre-set elapsed time.


There might be blocking diodes to prevent reverse current flow. Check
with the manufacturer or do your own experiment to see what happens.

Tim May 16th 09 02:21 AM

Charging the battery -- how long is okay?
 
On May 15, 1:49*pm, "BetaB4" wrote:
Calif Bill wrote:
"BetaB4" wrote in message
motor. *So, when I take the boat out and use the electric motor, I
need to recharge the battery when I get home.

Just use a cheap timer to charge the battery for 10-12 hours after you
return from fishing. *The battery sitting unused will not discharge
much.


About using a timer..., if I use a timer and the timer turns off the power
to the battery charger when the time is up, the battery charger will still
be set to "ON" and it will still be connected to the battery. *Is there any
problem with that?

Somehow, that seems like the battery charger circuit will still be connected
to the battery, and the battery will discharge back through the battery
charger. *On the other hand, if the battery charger switch is set to "OFF",
and the battery charger is left connected to the battery, I assume that the
circuit between the battery and the battery charger is disconnected.

But, with the timer approach, there is no way to switch the battery charger
switch to the "OFF" position at the end of the pre-set elapsed time.


Actually, your battery charger has diodes in it (one way electrical
valves) that allow the current to flow to the battery but not back to
the charger. you shouldnt have any problem there.

Tim May 16th 09 02:23 AM

Charging the battery -- how long is okay?
 
On May 15, 3:42*pm, "BetaB4" wrote:
Calif Bill wrote:
"BetaB4" wrote in message


About using a timer..., if I use a timer and the timer turns off the
power to the battery charger when the time is up, the battery
charger will still be set to "ON" and it will still be connected to
the battery. *Is there any problem with that?


Never saw a problem with the charger I used. *I very much doubt any
dumb charger has any difference from it being off and no power to the
charger.


Now, I'm getting curious, so I tried a Google search on this question. *Not
too much info so far, but here's what I did:

I did a Google search for "leaving an unplugged battery charger connected to
battery" (without the quotation marks). *One of the results was this:

http://www.hydrolynx.com/_manuals/5030.pdf

It says,

"To remove the battery charger after the charging has been completed, unplug
the charger
from the power outlet before removing the terminal lugs or connector from
the battery.

Remove the terminal lugs from the battery terminals immediately. Do not
leave a fully

charged battery connected to an unplugged battery charger. In some
instances, the

charger will drain the battery through the power transformer."


That's the key right the

"In *SOME* instances, the charger will drain the battery through the
power transformer."

BetaB4[_2_] May 23rd 09 02:03 AM

Charging the battery -- how long is okay?
 
Thanks all.

Based on what everyone wrote, I've been looking for an "automatic" battery
charger. I checked Harbor Freight and one person suggested.

Here's the instruction manual for one Harbor Freight battery charger:

http://www.harborfreight.com/manuals...6999/66783.pdf

On Pages 8 and 9 of the manual, it talks about not leaving the charger on
and the possibility of the battery overheating with the charger on. So, I'm
a little confused. Does the automatic shutoff actually work or not?


"BetaB4" wrote in message
...
I have a battery charger for charging the 12-volt boat battery. The
charger has two settings -- 2 amps or 6 amps.

My question is, if I have the charger set at 2 amps, how long is it okay
for me to leave the charger on? My boat is in a garage at a location that
I usually only get to about once a week or so. Is it okay if the charger
is left on at the 2-amp setting for say, a week?



BetaB4 May 23rd 09 03:40 PM

Charging the battery -- how long is okay?
 
Gene wrote:

Cutting to the chase.... it *should*, no, rather, it MUST. Harbor
Freight sells cheap crap made overseas. Put some money into this thing
and do it right.

A charger should charge at a minimum of three rates:

1) Bulk Phase - maybe at 40-80 amps until the battery is charged to
about 75% of full charge.

2) Acceptance Phase - battery voltage is maintained at 14.4V and the
amperage is reduced. That should charge the remaining 25% of the
battery.

3) Float Phase - (and this directly addresses your question) voltage
is reduced to 13.3V. This will maintain the battery without boiling
off the electrolyte.

The best chargers employ an equalization phase.

Here is some worthwhile reading material:

http://www.westmarine.com/webapp/wcs...ryCharging.htm

http://www.batteryuniversity.com/


Thanks. That's all good information. Now the question is where to find the
right kind of charger. So far, when I look at what is for sale in stores,
the information is cryptic. I can't quite tell what it means -- just like
the Harbor Freight battery manual is vague about how it works, whether it
will shut off, etc.

I know this can't be all that complicated to figure out. I guess I'll just
keep shopping until I see what looks right.



HK May 23rd 09 05:38 PM

Gene: Battery Clips?
 
Gene -

Any ideas where I can find a pair of *quality* battery clips to attach
to my existing battery charger? Probably 12 gauge wire to the charger,
need oversized clips to attach to the battery lugs. I've about exhausted
the hardware/electrical outlets in this area.

Thanks...hk

[email protected] May 23rd 09 05:43 PM

Gene: Battery Clips?
 
On May 23, 12:38*pm, HK wrote:
Gene -

Any ideas where I can find a pair of *quality* battery clips to attach
to my existing battery charger? Probably 12 gauge wire to the charger,
need oversized clips to attach to the battery lugs. I've about exhausted
the hardware/electrical outlets in this area.

Thanks...hk


You're kidding, right?
You really can't find them???????

Reginald P. Smithers III, Esq.[_5_] May 23rd 09 08:30 PM

Gene: Battery Clips?
 
HK wrote:
Gene -

Any ideas where I can find a pair of *quality* battery clips to attach
to my existing battery charger? Probably 12 gauge wire to the charger,
need oversized clips to attach to the battery lugs. I've about exhausted
the hardware/electrical outlets in this area.

Thanks...hk


Here are a few places that sell them:

http://tinyurl.com/battclips


--
Reginald P. Smithers III, Esq.

This Newsgroup post is a natural product. The slight variations in
spelling and grammar enhance its individual character and beauty and in
no way are to be considered flaws or defects

D K[_11_] May 23rd 09 11:54 PM

Gene: Battery Clips?
 
Gene wrote:
On Sat, 23 May 2009 12:38:05 -0400, HK wrote:

Gene -

Any ideas where I can find a pair of *quality* battery clips to attach
to my existing battery charger? Probably 12 gauge wire to the charger,
need oversized clips to attach to the battery lugs. I've about exhausted
the hardware/electrical outlets in this area.

Thanks...hk


Here's a start:
http://parts.digikey.com/1/parts-kws...tor-heavy-duty


12ga on the battery side? What is WAFA trying to charge?

If he *USED* his boat, this wouldn't be an issue.

HK May 24th 09 12:47 AM

Gene: Battery Clips?
 
Gene wrote:
On Sat, 23 May 2009 18:54:09 -0400, D K
wrote:

Gene wrote:
On Sat, 23 May 2009 12:38:05 -0400, HK wrote:

Gene -

Any ideas where I can find a pair of *quality* battery clips to attach
to my existing battery charger? Probably 12 gauge wire to the charger,
need oversized clips to attach to the battery lugs. I've about exhausted
the hardware/electrical outlets in this area.

Thanks...hk
Here's a start:
http://parts.digikey.com/1/parts-kws...tor-heavy-duty

12ga on the battery side?


12 ga. at 10 feet is only good for about 15A....



Well, I haven't measured the existing leads off the charger...but I will
when I find a decent supplier of clips. The leads are 6' long, though.

HK May 24th 09 01:05 AM

Gene: Battery Clips?
 
Gene wrote:
On Sat, 23 May 2009 19:47:09 -0400, HK wrote:

Gene wrote:
On Sat, 23 May 2009 18:54:09 -0400, D K
wrote:

Gene wrote:
On Sat, 23 May 2009 12:38:05 -0400, HK wrote:

Gene -

Any ideas where I can find a pair of *quality* battery clips to attach
to my existing battery charger? Probably 12 gauge wire to the charger,
need oversized clips to attach to the battery lugs. I've about exhausted
the hardware/electrical outlets in this area.

Thanks...hk
Here's a start:
http://parts.digikey.com/1/parts-kws...tor-heavy-duty
12ga on the battery side?
12 ga. at 10 feet is only good for about 15A....


Well, I haven't measured the existing leads off the charger...but I will
when I find a decent supplier of clips. The leads are 6' long, though.


You may be stuck with somewhere like Mouser or Digi-Key. Maybe Newark
would have it, there is one in Hanover.....

I don't care for this design, but they're closer to you than
Hanover...
http://tinyurl.com/pge9co



Yeah, I had a pair of those West Marine clips on my last charger. I
wasn't that impressed with them. The local chain auto supply stores sell
low-priced Chinese crapola.

Vic Smith May 24th 09 01:14 AM

Gene: Battery Clips?
 
On Sat, 23 May 2009 20:05:16 -0400, HK wrote:

Gene wrote:
On Sat, 23 May 2009 19:47:09 -0400, HK wrote:

Gene wrote:
On Sat, 23 May 2009 18:54:09 -0400, D K
wrote:

Gene wrote:
On Sat, 23 May 2009 12:38:05 -0400, HK wrote:

Gene -

Any ideas where I can find a pair of *quality* battery clips to attach
to my existing battery charger? Probably 12 gauge wire to the charger,
need oversized clips to attach to the battery lugs. I've about exhausted
the hardware/electrical outlets in this area.

Thanks...hk
Here's a start:
http://parts.digikey.com/1/parts-kws...tor-heavy-duty
12ga on the battery side?
12 ga. at 10 feet is only good for about 15A....

Well, I haven't measured the existing leads off the charger...but I will
when I find a decent supplier of clips. The leads are 6' long, though.


You may be stuck with somewhere like Mouser or Digi-Key. Maybe Newark
would have it, there is one in Hanover.....

I don't care for this design, but they're closer to you than
Hanover...
http://tinyurl.com/pge9co



Yeah, I had a pair of those West Marine clips on my last charger. I
wasn't that impressed with them. The local chain auto supply stores sell
low-priced Chinese crapola.


Never paid much attention to charger clips. They all seem to work
fine with a wiggle. Light wire.
Jumper cable clips are the ones I pay attention to.
Seen a lot of guys think they had a connection when they didn't.
Listening to the alt on the running vehicle tells the tale.
Same with the chargers I've used. Go by the needles and hum.
Might try ****ing on it as a final test.
Reminds me of the time me and 3 mates stood on the bumper and ****ed
on the generator in my '61 Pontiac to put out the fire.
Virginia Beach.

--Vic

HK May 24th 09 01:36 AM

Gene: Battery Clips?
 
Vic Smith wrote:
On Sat, 23 May 2009 20:05:16 -0400, HK wrote:

Gene wrote:
On Sat, 23 May 2009 19:47:09 -0400, HK wrote:

Gene wrote:
On Sat, 23 May 2009 18:54:09 -0400, D K
wrote:

Gene wrote:
On Sat, 23 May 2009 12:38:05 -0400, HK wrote:

Gene -

Any ideas where I can find a pair of *quality* battery clips to attach
to my existing battery charger? Probably 12 gauge wire to the charger,
need oversized clips to attach to the battery lugs. I've about exhausted
the hardware/electrical outlets in this area.

Thanks...hk
Here's a start:
http://parts.digikey.com/1/parts-kws...tor-heavy-duty
12ga on the battery side?
12 ga. at 10 feet is only good for about 15A....
Well, I haven't measured the existing leads off the charger...but I will
when I find a decent supplier of clips. The leads are 6' long, though.
You may be stuck with somewhere like Mouser or Digi-Key. Maybe Newark
would have it, there is one in Hanover.....

I don't care for this design, but they're closer to you than
Hanover...
http://tinyurl.com/pge9co


Yeah, I had a pair of those West Marine clips on my last charger. I
wasn't that impressed with them. The local chain auto supply stores sell
low-priced Chinese crapola.


Never paid much attention to charger clips. They all seem to work
fine with a wiggle. Light wire.
Jumper cable clips are the ones I pay attention to.
Seen a lot of guys think they had a connection when they didn't.
Listening to the alt on the running vehicle tells the tale.
Same with the chargers I've used. Go by the needles and hum.
Might try ****ing on it as a final test.
Reminds me of the time me and 3 mates stood on the bumper and ****ed
on the generator in my '61 Pontiac to put out the fire.
Virginia Beach.

--Vic



Now that is a video that would be worth owning!

D K[_11_] May 25th 09 01:36 AM

Gene: Battery Clips?
 
Gene wrote:
On Sat, 23 May 2009 18:54:09 -0400, D K
wrote:

Gene wrote:
On Sat, 23 May 2009 12:38:05 -0400, HK wrote:

Gene -

Any ideas where I can find a pair of *quality* battery clips to attach
to my existing battery charger? Probably 12 gauge wire to the charger,
need oversized clips to attach to the battery lugs. I've about exhausted
the hardware/electrical outlets in this area.

Thanks...hk
Here's a start:
http://parts.digikey.com/1/parts-kws...tor-heavy-duty

12ga on the battery side?


12 ga. at 10 feet is only good for about 15A....


The extension cord manufacturers show different results...

http://colemancable.com/CatalogProdu...ProductsID=156


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