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Default Boat battery question???

Hi

I bought the two Nautaulis deep cycle big batteries for 139. ea. Also the
motomaster 10/2 amp automatic charger regurlarily 70.

I have had the 2amp charger on one of the batteries for about 6 hours or 8
hours and little bubbling going on I can hear and the charger still is not
changing from red light (charging) to green light (charged).

Should I keep it on the 2am for longer? Batteries are only 1 week old from
Canadian Tire and charger is also new.

Is the bubbling a concern? It is not boiling over, but listening very close
you can hear the bubbling.


http://www.canadiantire.ca/AST/brows...%2BBattery.jsp



http://www.canadiantire.ca/AST/brows...BCha rger.jsp



Nobody at any of the branches could give me any real advice. I wanted to
treat these batteries with kid gloves so they would last more than 4 years.

Any advice or help would be greatly appreciated,,, thanks

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Default Boat battery question???

" Tuuk" wrote in
:

I have had the 2amp charger on one of the batteries for about 6 hours
or 8 hours and little bubbling going on I can hear and the charger
still is not changing from red light (charging) to green light
(charged).

Should I keep it on the 2am for longer? Batteries are only 1 week old
from Canadian Tire and charger is also new.

Is the bubbling a concern? It is not boiling over, but listening very
close you can hear the bubbling.



Got a digital voltmeter? They're only $4 at the Chinese cheap tool
stores and are very accurate. With the charger running, you should not
see over 14.8VDC at the battery terminals. You must be awful close if
it's bubbling loud enough to hear. Don't leave it on bubbling so you
can hear... Modern batteries not being overcharged use almost no water
over long periods of time. If you have to refill the battery very
often, you're overcharging it.

While you're foraging for a DVM, buy a temperature compensated
hydrometer, not the cheap crap with the floating colored balls, one that
has a real thermometer buried in a rubber housing from the NAPA store or
where mechanics buy auto parts. That's the ONLY way to tell what
condition your battery cells are in. When it's charged, the specific
gravity, compensated for temperature of the electrolyte which is the
only way to get an accurate reading, should be 1.270 sp gr. All the
cells should be within .005 sp gr of each other. If you find a low
cell, way off from the others...bad battery needs replacment under
warranty. It does happen.

Remember, batteries are only refilled with PURE DISTILLED WATER, not
spring water, city water or that crap in the hose on the dock....(sigh)
Distilled water is available at grocery stores to put in clothes irons.
Make SURE it says STEAM DISTILLED, not just demineralized by pouring it
through a cheap filter gadget.



--
-----
Larry

If a man goes way out into the woods all alone and says something,
is it still wrong, even though no woman hears him?
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Default Boat battery question???

Hi Larry

Thanks for the reply and expertise,,

I do not have a dvm or specific gravitity measurer.

So I should shut it off now because it is lightly bubbling on the 2am charge
because it has not reached the capacity point where the automatic shut off
should have shut off. I tried it on an old 12v deep cycle and it did charge
it quickly (maybe an hour) and green light came on. But these two new ones
which are larger in size and weight are not shutting off the automatic
charger yet. I am a bit reluctant to charge it in the 10amp. The folks at
the C.T. told me to bring in the batteries and they will put a 30amp on them
and have them topped up in minutes but I did some reading and that can't be
too good for the deepcycle batteries.

Without the dvm or hydrometer I cannot really do much as I will need to know
the condition of battery and maximum charge coming off that charger.

I will look for those tools,

thanks






"Larry" wrote in message
...
" Tuuk" wrote in
:

I have had the 2amp charger on one of the batteries for about 6 hours
or 8 hours and little bubbling going on I can hear and the charger
still is not changing from red light (charging) to green light
(charged).

Should I keep it on the 2am for longer? Batteries are only 1 week old
from Canadian Tire and charger is also new.

Is the bubbling a concern? It is not boiling over, but listening very
close you can hear the bubbling.



Got a digital voltmeter? They're only $4 at the Chinese cheap tool
stores and are very accurate. With the charger running, you should not
see over 14.8VDC at the battery terminals. You must be awful close if
it's bubbling loud enough to hear. Don't leave it on bubbling so you
can hear... Modern batteries not being overcharged use almost no water
over long periods of time. If you have to refill the battery very
often, you're overcharging it.

While you're foraging for a DVM, buy a temperature compensated
hydrometer, not the cheap crap with the floating colored balls, one that
has a real thermometer buried in a rubber housing from the NAPA store or
where mechanics buy auto parts. That's the ONLY way to tell what
condition your battery cells are in. When it's charged, the specific
gravity, compensated for temperature of the electrolyte which is the
only way to get an accurate reading, should be 1.270 sp gr. All the
cells should be within .005 sp gr of each other. If you find a low
cell, way off from the others...bad battery needs replacment under
warranty. It does happen.

Remember, batteries are only refilled with PURE DISTILLED WATER, not
spring water, city water or that crap in the hose on the dock....(sigh)
Distilled water is available at grocery stores to put in clothes irons.
Make SURE it says STEAM DISTILLED, not just demineralized by pouring it
through a cheap filter gadget.



--
-----
Larry

If a man goes way out into the woods all alone and says something,
is it still wrong, even though no woman hears him?


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Default Boat battery question???

" Tuuk" wrote in message
...
Hi Larry

Thanks for the reply and expertise,,

I do not have a dvm or specific gravitity measurer.

So I should shut it off now because it is lightly bubbling on the 2am
charge because it has not reached the capacity point where the automatic
shut off should have shut off. I tried it on an old 12v deep cycle and it
did charge it quickly (maybe an hour) and green light came on. But these
two new ones which are larger in size and weight are not shutting off the
automatic charger yet. I am a bit reluctant to charge it in the 10amp. The
folks at the C.T. told me to bring in the batteries and they will put a
30amp on them and have them topped up in minutes but I did some reading
and that can't be too good for the deepcycle batteries.

Without the dvm or hydrometer I cannot really do much as I will need to
know the condition of battery and maximum charge coming off that charger.

I will look for those tools,

thanks



I don't think one charge like this would do much harm if you decide to have
them do it. They're under warranty, right? Make sure you document when this
is done, then if there's a problem, you've got some leverage.

After, I would monitor the batteries condition closely for a few weeks, then
check them regularly thereafter.

--
"j" ganz @@
www.sailnow.com



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Default Boat battery question???


"Capt. JG" wrote in message
easolutions...

The folks at the C.T. told me to bring in the batteries and they will
put a 30amp on them and have them topped up in minutes but I did some
reading and that can't be too good for the deepcycle batteries.




I don't think one charge like this would do much harm if you decide to
have them do it.



Now's that's the voice of experience! Ignore any advice from this
knucklehead he's blowing smoke from his ass.




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Default Boat battery question???

"Mac Donald" wrote in news:2tn979.6g0.19.1
@news.alt.net:


"Capt. JG" wrote in message
easolutions...

The folks at the C.T. told me to bring in the batteries and they will
put a 30amp on them and have them topped up in minutes but I did some
reading and that can't be too good for the deepcycle batteries.




I don't think one charge like this would do much harm if you decide to
have them do it.



Now's that's the voice of experience! Ignore any advice from this
knucklehead he's blowing smoke from his ass.




Mac? Don't you have 4 500A alternators in parallel so you can charge the
house batteries in 5 minutes, like some boats I know?....(c;]

(It's not funny...I actually saw one like this!....with kids aboard going
offshore!)

--
-----
Larry

If a man goes way out into the woods all alone and says something,
is it still wrong, even though no woman hears him?
  #7   Report Post  
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First recorded activity by BoatBanter: Aug 2006
Posts: 390
Default Boat battery question???

Capt. JG wrote:
" Tuuk" wrote in message
...
Hi Larry

Thanks for the reply and expertise,,

I do not have a dvm or specific gravitity measurer.

So I should shut it off now because it is lightly bubbling on the 2am
charge because it has not reached the capacity point where the automatic
shut off should have shut off. I tried it on an old 12v deep cycle and it
did charge it quickly (maybe an hour) and green light came on. But these
two new ones which are larger in size and weight are not shutting off the
automatic charger yet. I am a bit reluctant to charge it in the 10amp. The
folks at the C.T. told me to bring in the batteries and they will put a
30amp on them and have them topped up in minutes but I did some reading
and that can't be too good for the deepcycle batteries.

Without the dvm or hydrometer I cannot really do much as I will need to
know the condition of battery and maximum charge coming off that charger.

I will look for those tools,

thanks



I don't think one charge like this would do much harm if you decide to have
them do it. They're under warranty, right? Make sure you document when this
is done, then if there's a problem, you've got some leverage.

After, I would monitor the batteries condition closely for a few weeks, then
check them regularly thereafter.



Actually, the Amperage is of secondary importance, even though every
charger is identified by its max current output. The important thing is
the Voltage. If the charger is gentle (or intelligent) it will keep the
Voltage at a level that's appropriate for the state of the battery.
Your 100 Amp-hour batteries can accept about 20-25 Amps as long as the
charger start tapering off the charge as it gets past about 85-90%. If
it is really putting in 30 Amps, then the Voltage is probably too high,
and the batteries will start gassing. (An undersized charger will
likely not be able to hold the Voltage high on a discharged battery.)

Of course then you have to figure out whether your CT man is just some
bozo who is BS'ing you while he trashes your battery, or a professional
who knows exactly how much the battery can handle and will monitor it
carefully so that no damage is done. Worse, you have to figure out if
that already happened while the battery was sitting in the store all
winter. This unfortunately is a "crap shoot" but I try to maximize my
odds by getting new batteries as part of the Spring shipment to a golf
cart vendor.
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Default Boat battery question???

" Tuuk" wrote in
:

I tried it on an old 12v deep cycle and it did charge
it quickly (maybe an hour) and green light came on. But these two new
ones which are larger in size and weight are not shutting off the
automatic charger yet. I am a bit reluctant to charge it in the 10amp.
The folks at the C.T. told me to bring in the batteries and they will
put a 30amp on them and have them topped up in minutes but I did some
reading and that can't be too good for the deepcycle batteries.


Yes, by all means take them to some dunderheads who think they can recharge
batteries in 30 minutes flat. How horrible most are. Boaters typically
charge the house batteries for 20 minutes at full current, thinking wrongly
they are recharging them....They're not.

10A charging is fine. Huge batteries take forever to charge on 2A, of
course assuming they're discharged. I can't imagine 2A bubbling anything
not fully charged.

Are you SURE there's no loads, at all, on this tiny charger? Aren't these
batteries also hooked to the house circuit?



--
-----
Larry

If a man goes way out into the woods all alone and says something,
is it still wrong, even though no woman hears him?
  #9   Report Post  
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Posts: 7,757
Default Boat battery question???

"Larry" wrote in message
...
" Tuuk" wrote in
:

I have had the 2amp charger on one of the batteries for about 6 hours
or 8 hours and little bubbling going on I can hear and the charger
still is not changing from red light (charging) to green light
(charged).

Should I keep it on the 2am for longer? Batteries are only 1 week old
from Canadian Tire and charger is also new.

Is the bubbling a concern? It is not boiling over, but listening very
close you can hear the bubbling.



Got a digital voltmeter? They're only $4 at the Chinese cheap tool
stores and are very accurate. With the charger running, you should not
see over 14.8VDC at the battery terminals. You must be awful close if
it's bubbling loud enough to hear. Don't leave it on bubbling so you
can hear... Modern batteries not being overcharged use almost no water
over long periods of time. If you have to refill the battery very
often, you're overcharging it.

While you're foraging for a DVM, buy a temperature compensated
hydrometer, not the cheap crap with the floating colored balls, one that
has a real thermometer buried in a rubber housing from the NAPA store or
where mechanics buy auto parts. That's the ONLY way to tell what
condition your battery cells are in. When it's charged, the specific
gravity, compensated for temperature of the electrolyte which is the
only way to get an accurate reading, should be 1.270 sp gr. All the
cells should be within .005 sp gr of each other. If you find a low
cell, way off from the others...bad battery needs replacment under
warranty. It does happen.

Remember, batteries are only refilled with PURE DISTILLED WATER, not
spring water, city water or that crap in the hose on the dock....(sigh)
Distilled water is available at grocery stores to put in clothes irons.
Make SURE it says STEAM DISTILLED, not just demineralized by pouring it
through a cheap filter gadget.



I agree with this... I'd be very concerned about bubbling and temp rise.
I've never been able to actually hear any bubbling, although small bubbles
do form and I can see them if I take a look. Make sure everything is OFF
(and I mean EVERYTHING) and wear eye protection if you decide to open the
fill holes. Obviously, you want to ensure nothing metal comes in contact
with the terminals. A friend of my father's died from a car battery
explosion.

I'd turn off everything, get a volt meter, and try again. Check the water
level before you restart the charging, and if it's low, I'd be even more
concerned.

--
"j" ganz @@
www.sailnow.com



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Default Boat battery question???

What about leaving the charger on overnight?

The battery hasn't shut off the 2amp automatic charger yet and its only been
about 8 hours. Could or should i try leaving it on the 2amp auto off, sure
it is light bubbling as i can hear it, and see what it looks like in the
morning.

If battery light shows red and continuing charge, then return the batteries
and charger to C.T. and explain and have them test and replace as necessary
as this is simply normal operations and they said do it anyway.

If battery light shows green then all should be good to go.

I just worry about hearing the light bubbling and know it would go on all
night. I read somewhere the bubbling wasn't good for the deepcycle plates
and reduces their efficiencies and capacity.

I gots to know.







"Capt. JG" wrote in message
easolutions...
"Larry" wrote in message
...
" Tuuk" wrote in
:

I have had the 2amp charger on one of the batteries for about 6 hours
or 8 hours and little bubbling going on I can hear and the charger
still is not changing from red light (charging) to green light
(charged).

Should I keep it on the 2am for longer? Batteries are only 1 week old
from Canadian Tire and charger is also new.

Is the bubbling a concern? It is not boiling over, but listening very
close you can hear the bubbling.



Got a digital voltmeter? They're only $4 at the Chinese cheap tool
stores and are very accurate. With the charger running, you should not
see over 14.8VDC at the battery terminals. You must be awful close if
it's bubbling loud enough to hear. Don't leave it on bubbling so you
can hear... Modern batteries not being overcharged use almost no water
over long periods of time. If you have to refill the battery very
often, you're overcharging it.

While you're foraging for a DVM, buy a temperature compensated
hydrometer, not the cheap crap with the floating colored balls, one that
has a real thermometer buried in a rubber housing from the NAPA store or
where mechanics buy auto parts. That's the ONLY way to tell what
condition your battery cells are in. When it's charged, the specific
gravity, compensated for temperature of the electrolyte which is the
only way to get an accurate reading, should be 1.270 sp gr. All the
cells should be within .005 sp gr of each other. If you find a low
cell, way off from the others...bad battery needs replacment under
warranty. It does happen.

Remember, batteries are only refilled with PURE DISTILLED WATER, not
spring water, city water or that crap in the hose on the dock....(sigh)
Distilled water is available at grocery stores to put in clothes irons.
Make SURE it says STEAM DISTILLED, not just demineralized by pouring it
through a cheap filter gadget.



I agree with this... I'd be very concerned about bubbling and temp rise.
I've never been able to actually hear any bubbling, although small bubbles
do form and I can see them if I take a look. Make sure everything is OFF
(and I mean EVERYTHING) and wear eye protection if you decide to open the
fill holes. Obviously, you want to ensure nothing metal comes in contact
with the terminals. A friend of my father's died from a car battery
explosion.

I'd turn off everything, get a volt meter, and try again. Check the water
level before you restart the charging, and if it's low, I'd be even more
concerned.

--
"j" ganz @@
www.sailnow.com






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