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Ron, Before hitting them with a lot of current, I'd put groups of six on a lower charge with an external charger for a while. It'll give you a chance to see how each one is doing. Then re-wire them for 24-volts and connect the Outback inverter. If they are to come back to life they'll need a long long time. Kent Osterberg Ron Young wrote: 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. |
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