Are lead acid batteries destroyed after a certain point?
Posted on Feb 03, 2010 under lead acid | 3 CommentsI have a lead acid battery and I let it fall to 9 volts. Now it’s self-discharged to 6.3 volts, and it’s self-discharging more. Will it be safe to charge it? Or is it unusable now?
A 12V lead acid battery should be charged at 13.5V with a little variation for temperature.
Each cell in a battery is 2.25V, so with 6 x cells that’s 13.5V
A battery at 9V has it’s cells at 1.5V, pretty much fully discharged.
Below this voltage you are talking internal discharging, which can only be shorting between the cell poles.
Once this has occured the battery is limited and reasonably dangerous to hook up to power.
Like Bob said can start a fire.
Good luck!
Visit me at http://www.premiumsciencetrade.com
By Haroon on Feb 3, 2010 | Reply
i think it is no safe
u should buy an other one
References :
By ►BobB◄ on Feb 3, 2010 | Reply
by abusing the battery, one or two internal cells may have shorted.
it is now landfill… since the cells maybe shorted, it can catch fire.
References :
By Clive on Feb 3, 2010 | Reply
A 12V lead acid battery should be charged at 13.5V with a little variation for temperature.
Each cell in a battery is 2.25V, so with 6 x cells that’s 13.5V
A battery at 9V has it’s cells at 1.5V, pretty much fully discharged.
Below this voltage you are talking internal discharging, which can only be shorting between the cell poles.
Once this has occured the battery is limited and reasonably dangerous to hook up to power.
Like Bob said can start a fire.
Good luck!
Visit me at http://www.premiumsciencetrade.com
References :
3 years with Silcar Corp. Siemens & Thiess Perth Western Australia.