AGM Leisure battery 110AH arrived flat
 

AGM Leisure battery 110AH arrived flat

I just bought 2 AGM 110AH leisure batteries

http://cgi.ebay.co.uk/ws/eBayISAPI.d...0641&rd=1&rd=1

They just got here and they are both completely flat,

The dealer said that was normal and i should trickle charge them for
24 hours,

He said they had been on the shelf for 8 months,

Shouldnt he have been charging them during that time ?
Shouldnt they be kept in storage at 50 per cent charge ?

Any feedback greatly appreciated.

AGM Leisure battery 110AH arrived flat
 

"navti" wrote in message
oups.com...
AGM Leisure battery 110AH arrived flat

I just bought 2 AGM 110AH leisure batteries

http://cgi.ebay.co.uk/ws/eBayISAPI.d...0641&rd=1&rd=1

They just got here and they are both completely flat,

The dealer said that was normal and i should trickle charge them for
24 hours,

He said they had been on the shelf for 8 months,

Shouldnt he have been charging them during that time ?
Shouldnt they be kept in storage at 50 per cent charge ?

Any feedback greatly appreciated.



You might be able to find information he

http://www.windsun.com/Batteries/Battery_FAQ_Index.htm


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

AGM Leisure battery 110AH arrived flat
 

navti wrote in news:1179938775.316509.214520
@k79g2000hse.googlegroups.com:

Any feedback greatly appreciated.



Toast. They are full of lead sulphate where the plates USED to be. No
amount of wishing or charging are going to make them what you paid for.

Simply return them to the shyster you bought them from and go BUY NEW
BATTERIES...preferrably REAL lead-acid, deep cycle WETCELL batteries.

There is no such thing as a "discharged" lead-acid battery. When they
arrive in that condition they are "DEAD" lead-acid batteries that cannot
be recovered. If you do get some charge into them, the stable lead
sulphate crystals, in this case firmly held against the plates by the
damned gauze so they cannot precipitate away from the plates, will
consume what little acid in the damned guaze that has not been converted
to lead sulphate (lead + H2SO4 = lead sulphate).

The ONLY reason you can recharge a lead-acid battery is because the lead
sulphate IONS have not joined into lead sulphate and crystalized. In
ionic state, electronic force can be applied to make these Ions break
apart and replate the plates. Your plates, already eaten away into lead
sulphate crystals, a very stable crystal that cannot be recovered by
charging, no matter how expensive a charger you buy, have consumed the
majority of their acid load (which is what makes a lead-acid battery
"dead", the lack of acid in solution).

So.....in short......YOU GOT SCREWED WITH SOME OLD BATTERIES SOMEONE
DUMPED.

If he won't rebate your money, be SURE to report his ass to Ebay and vent
your anger on him, publically, on THIS newsgroup and other forums.

Larry
--
Pay no attention to those posters telling you you can just charge
them.....You can't.

AGM Leisure battery 110AH arrived flat
 

On May 23, 10:01 pm, Larry wrote:
navti wrote in news:1179938775.316509.214520
@k79g2000hse.googlegroups.com:

Any feedback greatly appreciated.

Toast. They are full of lead sulphate where the plates USED to be. No
amount of wishing or charging are going to make them what you paid for.

Simply return them to the shyster you bought them from and go BUY NEW
BATTERIES...preferrably REAL lead-acid, deep cycle WETCELL batteries.

There is no such thing as a "discharged" lead-acid battery. When they
arrive in that condition they are "DEAD" lead-acid batteries that cannot
be recovered. If you do get some charge into them, the stable lead
sulphate crystals, in this case firmly held against the plates by the
damned gauze so they cannot precipitate away from the plates, will
consume what little acid in the damned guaze that has not been converted
to lead sulphate (lead + H2SO4 = lead sulphate).

The ONLY reason you can recharge a lead-acid battery is because the lead
sulphate IONS have not joined into lead sulphate and crystalized. In
ionic state, electronic force can be applied to make these Ions break
apart and replate the plates. Your plates, already eaten away into lead
sulphate crystals, a very stable crystal that cannot be recovered by
charging, no matter how expensive a charger you buy, have consumed the
majority of their acid load (which is what makes a lead-acid battery
"dead", the lack of acid in solution).

So.....in short......YOU GOT SCREWED WITH SOME OLD BATTERIES SOMEONE
DUMPED.

If he won't rebate your money, be SURE to report his ass to Ebay and vent
your anger on him, publically, on THIS newsgroup and other forums.

Larry
--
Pay no attention to those posters telling you you can just charge
them.....You can't.

whats the minimum voltage you would expect on a new battery ?

AGM Leisure battery 110AH arrived flat
 

navti wrote in news:1179958931.889112.201180
@p47g2000hsd.googlegroups.com:

whats the minimum voltage you would expect on a new battery ?



Over 12.5

Larry
--
Grade School Physics Factoid:
A building cannot freefall into its own footprint without
skilled demolition.

AGM Leisure battery 110AH arrived flat
 

"Larry" wrote in message
...
navti wrote in news:1179958931.889112.201180
@p47g2000hsd.googlegroups.com:

whats the minimum voltage you would expect on a new battery ?



Over 12.5

Larry
--
Grade School Physics Factoid:
A building cannot freefall into its own footprint without
skilled demolition.

Navti, don't listen to Larry. He's a known blowhard extremist. Sometimes
he's right but most of the time he's off the mark. He just tends to go
to extremes.

The best way to check whether or not a battery is any good is to charge
it up for a day or so on a good quality three-stage charger that can
give that final float charge. Then you need to check it with a volt
meter but under a load such as a one or two amp bulb.

It should show over 12 volts. If it continues to show over 12 volts for
about fifteen or twenty minutes then it's probably in decent shape.
Larry apparently doesn't have a clue about testing batteries under a
load.

Wilbur Hubbard

AGM Leisure battery 110AH arrived flat
 

Larry wrote in news:Xns9939C87A94F33noonehomecom@
208.49.80.253:

whats the minimum voltage you would expect on a new battery ?



Over 12.5



Let me rephrase that, after thinking it over. The voltage on all 6 cells
of a lead-acid battery that has "some acid" in it is around 2V/cell. It
means NOTHING, except that all 6 cells have some lead and some acid in
it.

Voltage, in lead acid batteries, isn't important. SPECIFIC GRAVITY is.
Now, in a gelcell or AGM battery, there's no way to measure the condition
of the acid that puts the POW in POWer. This is precisely why I don't
like them. There's no way of telling what the chemical condition of an
AGM battery is unless you do a load test over hours to find out when dead
is dead. I'm kind of attached to my trusty TEMPERATURE COMPENSATED
hydrometer, myself, the ONLY way to tell what the condition of a wetcell
is. Why??

When a lead-acid battery is new, the new electrolyte specific gravity, an
indication of the amount of acid, knowing the quantity of electrolyte and
plate area, is around 1.260 to 1.270. (Take some electrolyte out of the
dry cell charger container and measure it with a hydrometer.) The design
of the cell is that a certain quantity of acid is available that will
produce the maximum electrons (AH capacity), without the acid eating the
lead to the point it has unrecoverable holes in it that cannot be
replated/recharged. The acid is converted to lead sulphate first. This
is measured by measuring the specific gravity of the liquid electrolyte.

Ok, a new battery is loaded with electrolyte and just sits there. From
that point on, impurities in the plates, mainly iron, form little shorted
batteries on the surface of the plates...lead-iron-acid. This eats a
tiny spot on the plate...if enough impurities exist, you not the specific
gravity of the worst offender drops below 1.26-1.27 further than the
others. They all drop a little as there are no pure lead plates,
especially at these prices and profit margins. It's ok to recharge a new
battery to restore the plating, raising the gravity back up to 1.27 as we
recover the acid.

"Dead cell" isn't dead. It has just run out of RECOVERABLE acid. The
cells in this "dead" AGM battery are in this condition if the cell has
been discharged over a week or two because the acid has been
unrecoverably converted to stable salts, like lead sulphate crystals.
You'll get the gravity (you can't measure in AGM) to rise some....but not
back to 1.27 because before that happens, we've run out of ionic lead
sulphate that electrical current can split to lead and H2SO4. As there's
not enough SO4 to use, charging the hell out of it only results in
"gassing", splitting the H2O in the electrolyte into H2, which bonds into
hydrogen gas if you do it hard enough, and rises out through the cell's
vent....the electrolyte drops as the water is split. (Your boat cells
been topped off, lately??)...just a thought...(c;

The only way I know of to "test" the condition of gelcell and AGM
CAPACITY is to watch how LONG it takes them before their charging voltage
gets to 14.2 or 14.3V. If the acid has been eaten up and cannot be
recovered, every boaters smiles away because he saw the "meter" rise
QUICKLY to 14.2V "in the GREEN" in 20 minutes at 10A. 10A x .33 hours =
3.3AH, the remaining capacity of these hosed AGM babies all sulphated to
hell. A "good" dead AGM battery won't come up for HOURS at 10A....10A
for 13 hours = 130AH, for instance.....NOT 20 MINUTES. If the dead AGMs
rise quickly, they're HOSED and need replacing.

Larry
--
AGM separator factory in China on Youtube!
http://youtube.com/watch?v=jNHR24Gi6A0

AGM Leisure battery 110AH arrived flat
 

The only way I know of to "test" the condition of gelcell and AGM
CAPACITY is to watch how LONG it takes them before their charging voltage
gets to 14.2 or 14.3V. If the acid has been eaten up and cannot be
recovered, every boaters smiles away because he saw the "meter" rise
QUICKLY to 14.2V "in the GREEN" in 20 minutes at 10A. 10A x .33 hours =
3.3AH, the remaining capacity of these hosed AGM babies all sulphated to
hell. A "good" dead AGM battery won't come up for HOURS at 10A....10A
for 13 hours = 130AH, for instance.....NOT 20 MINUTES. If the dead AGMs
rise quickly, they're HOSED and need replacing.

i contacted another buyer (a boater) and she said

"Hi, mine had 10.5V and took about 4 hours to charge (less than I
thought) and seems to be holding the charge without problem."

that seems a bit suspicious to me.

AGM Leisure battery 110AH arrived flat
 

navti wrote in news:1179993861.082602.220690
@p77g2000hsh.googlegroups.com:

"Hi, mine had 10.5V and took about 4 hours to charge (less than I
thought) and seems to be holding the charge without problem."

that seems a bit suspicious to me.



"To charge to what?", is the question. To charge to 12AH, instead of 130AH
it was designed for? That'll happen when most of the plates are gone....
(c;

Larry
--
Grade School Physics Factoid:
A building cannot freefall into its own footprint without
skilled demolition.

AGM Leisure battery 110AH arrived flat
 

On May 23, 4:46 pm, navti wrote:
AGM Leisure battery 110AH arrived flat
I would return them, salesman lied...

If you wanna test them then:
1 charge them up, use boat charger
2 discharge them, w/a constant load [I'm sure you have an ammeter in
your boat?] Just turn on all the lights, note amp drain on meter.
3 multiply Amps times hours of discharge untill batt is 11V [some will
argue about 11V as "batt=dead"] [note: permanent damage if you go
below 10.5V]
4 If less than 110, return to seller!

You can of course repeat this procedure a few times to see if you get
better results each time, if no Major improvement on second go'round,
stop wasting time...

When testing out of boat, I use an automobile headlamp non-halogen,
they're usually 7-12 amps [you need to measure this with an ammeter].

tom
=-==