[RE-wrenches] High amp charge to desulphate
Ron Young
solareagle at solareagle.com
Sun Jan 10 20:32:32 PST 2010
Some interesting things to consider, thanks everyone!
Ron
On 10-Jan-10, at 4:20 PM, James Surrette wrote:
> Hi Ron,
>
> Given the time in "storage" the cells will be severely sulfated and
> will not accept much current initially - probably 28A max (1400x2%)
> and 70A (1400x5%) will suffice once current is accepted. A
> standalone "unregulated" charger or constant current would be best
> to reclaim these or at least get things started.
>
> Regards,
>
> Jamie
>
>
> James Surrette
>
> Surrette Battery Co. Ltd
> 1 Station Rd.
> Springhill, NS, CAN
> B0M 1X0
>
> Direct: 902.597.4027
> Fax: 902.597.8447
>
>
>
>
> >>> Ron Young <solareagle at solareagle.com> 1/10/2010 5:52 PM >>>
> I have just acquired a 24v set of 1400a/h 2v cells that have been in
> storage without a charge for several years. They were connected up
> in a system that was never turned on (long story). I believe these
> batteries can be recovered if I can get a high enough amp charge
> into them. The battery mfg. recommends putting a 200 amp charge on
> until internal temp rises to 40 degrees C then let them cool and do
> it again, maybe 15 times, to blow the sulphates of the plates.
> Unfortunately I don't have a 200 amp charger but I do have an
> Outback 3524 inverter with an 85 amp charger. I'm wondering if I can
> force the inverter to maximum charge to accomplish this. I hooked
> the inverter up but the batteries only have about 10.5 v output from
> the batteries (hooked up 12 in series for 24v). For this reason the
> Outback won't power up. I am wondering about using a standalone
> charger to provide power to the batteries -- which will also provide
> power to the inverter -- and allow it to come on and charge. Anyone
> suggest a better way?
>
>
> Ron Young
>
>
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