Ron, I had a similar experience. Customer had a similar battery, industrial, 1200 amp hrs at 48v, IBE that sat for a few years.
I hooked them up to a dual stack outback, and just turned it on. The voltage was brought up with some solar and then we ran the generator for a few days straight. Amazingly they did come back to life. He did get about 3 years before they did die for real. You won't need a lot of current, they won't take it, at least initially ( if they react anything like sulfated batteries I've dealt with) jay peltz power > 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. >> >> >> >> 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 >> >> _______________________________________________ >> List sponsored by Home Power magazine >> >> List Address: [email protected] >> >> Options & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out participant bios: >> www.members.re-wrenches.org >> >> >> >> >> No virus found in this incoming message. >> Checked by AVG - www.avg.com >> Version: 9.0.725 / Virus Database: 270.14.132/2611 - Release Date: 01/09/10 >> 23:35:00 >> >> > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org >
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