[RE-wrenches] High amp charge to desulphate

[jay peltz]

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: RE-wrenches at lists.re-wrenches.org
>> 
>> 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: RE-wrenches at lists.re-wrenches.org
> 
> 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
> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20100110/adfe5251/attachment-0004.html>