Hybrid Car – More Fun with Less Gas

what voltage is lower limit for stored battery? - Page 4

register ::  Login Password  :: Lost Password?
Posted by Ulysses on August 28, 2009, 3:02 pm
 




My Smart Charger (12 volts) has a built-in desulfate cycle.  I have to admit
that I have seen some improvement by running it for several sessions (24
hours each) on a bad deep cycle flooded battery.  But I sure could not get
it to recover a battery that was sulfated from being undercharged.  So yes,
I was able to get the SG up a little higher, but no, the battery was still
not usable (in any practical sense).




Posted by Scott Dorsey on August 28, 2009, 4:28 pm
 



They will not repair a bad battery.  Once there is gunk on the plates and
the battery resistance has started to climb, the battery is dead.


The pulse desulfation is a typical feature of the battery maintaining devices,
and they prevent sulfation from happening in the first place.
--scott

--
"C'est un Nagra.  C'est suisse, et tres, tres precis."

Posted by Scott Dorsey on August 28, 2009, 4:27 pm
 


Yes.  Use one.

Most large UPS systems and big lighting charging systems now use the same
process.
--scott
--
"C'est un Nagra.  C'est suisse, et tres, tres precis."

Posted by harry on August 29, 2009, 6:14 pm
 

On Aug 27, 2:53 pm, klu...@panix.com (Scott Dorsey) wrote:

should be

connected a

If it's lead acid, yes drain if you want to store it for a long
period. But charge it up  first and then drain it and then wash out
with distilled water.
The best plan is to sell it, & buy a new one when you need one.
Even when new, they have a limited shelf life seven stored dry.

Posted by Martin Riddle on August 27, 2009, 10:03 pm
 




12.65v is a fully charged  Lead acid battery
12.45v is State of charge of 75%

So your keeping your battery over 75% charged by keeping the voltage
above 12.5v, which should be fine.

For AGM I would consult the Mfg.

Cheers



This Thread
Bookmark this thread:
 
 
 
 
 
 
  •  
  • Subject
  • Author
  • Date
please rate this thread