A 12AH SLA charge at 2A constantly is probably too high especially you are
going to leave it charge for another 24 hours, if a cell inside has problem
then the charging current will not be reduce as the charger usually detect
voltage to stop charging. You may want to keep track of the battery
temperature during charging.
C.H.Ling
----- Original Message -----
From: "Chuck Norcutt"
>I have assumed it's toast and ordered a new one from a local electronics
> supplier who promises delivery in 3 days. That's good because I need to
> do some formal outdoor portraits of a friend's daughter in her wedding
> dress before the wedding day. In the meantime I have put my old 6 amp
> car charger on the old battery and it is now charging at about 2 amps
> vs. the other 1.5 amp maintenance charger. After a couple of hours it
> raised the no load voltage to about 13.25 or about 0.4 volts higher than
> I had seen before. I think I will let it charge, then rest for 24 hours
> and then charge it again as per the advice on the Battery University link.
>
> I'm sure I'll send it off to the local toxic waste facility but I'm
> curious to see if it will be at least somewhat rejuvenated.
>
> Chuck Norcutt
>
>
> Ken Norton wrote:
>>> This battery is about 3 years old but rarely used and rarely charged.
>>> Do you think it's toast?
>>>
>>
>>
>> Without a regular float (maintenance) charge on the battery, I'd say,
>> yes,
>> it is probably toast. SLAs don't take to slow-drain very well.
>>
>> AG
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