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Discussion Starter · #1 ·
I have a chance to pickup 10 Panasonic sealed lead acid batteries. They are
12 volt and 33 ah each. The problem is that they have been sitting in a
garage for the past year and they are dead or show very low voltage. The
guy that has them now said that they were fine when he stored them last
year. I would like to try to restore them but I am not sure how to proceed.
I think that they are too small to use in my DakotaEV but I could probable
use them in some other experiments that I am planning. Can anyone suggest a
way to restore these batteries short of throwing them away and buying new
ones?



Thanks, Freddie

http://www.austinev.org/evalbum/899



http://www.southernev.com/dakotaev.htm







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Discussion Starter · #2 ·
I have used this on several dead batteries that have sat and had good
results, use it for 48 hours or longer on each battery. It's a good
charger as well and can be found online for about $100

Mark

http://www.vdcelectronics.com/batteryminder_12248.htm




Freddie Hartsell wrote:

> I have a chance to pickup 10 Panasonic sealed lead acid batteries.
> They are
> 12 volt and 33 ah each. The problem is that they have been sitting
> in a
> garage for the past year and they are dead or show very low
> voltage. The
> guy that has them now said that they were fine when he stored them
> last
> year. I would like to try to restore them but I am not sure how to
> proceed.
> I think that they are too small to use in my DakotaEV but I could
> probable
> use them in some other experiments that I am planning. Can anyone
> suggest a
> way to restore these batteries short of throwing them away and
> buying new
> ones?
>
>
>
> Thanks, Freddie
>
> http://www.austinev.org/evalbum/899
>
>
>
> http://www.southernev.com/dakotaev.htm
>
>
>
>
>
>
>
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
>

_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev
 

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Registered
Joined
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70 Posts
Discussion Starter · #3 ·
> I have a chance to pickup 10 Panasonic sealed lead acid batteries. They are
> 12 volt and 33 ah each. The problem is that they have been sitting in a
> garage for the past year and they are dead or show very low voltage. The
> guy that has them now said that they were fine when he stored them last
> year. I would like to try to restore them but I am not sure how to proceed.
> I think that they are too small to use in my DakotaEV but I could probable
> use them in some other experiments that I am planning. Can anyone suggest a
> way to restore these batteries short of throwing them away and buying new
> ones?
>

Use a 12Vdc wall-wart (18-20V open-circuit) that puts out 500mA (give
or take). One from a long-dead answering machine has revived several
batteries from 8V and below, get good current out of them, but I've
never measured remaining capacity and who knows how long they'll live
(but the same is true for any resurrected SLA, no matter how expensive
the treatment).

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