gel batterys back to life

hi guys is there any way of rejuvenating 12v 12ah gel batterys....i have shite loads of them.......kind regards helinely :o :shock: :?:

[Gotwind Ben]

We need a bit more info to give a meaningful answer.
Age of batteries
Last time they were charged
Voltage at present.

I don't have any experience of gel batteries i prefer the sealed lead acid flavour personally :?
Plenty of people here that will know (I hope).

sorry yes'''' :oops:

the gel batterys i have they have been stood for about 8months....
there showing 7.4v but dont seem to want to take any charge
there 12v 12ah but i do have 20 of these :idea: that were at the back of my shed...
if they can be brought back to life this would be good but if not i will take them to the local tip for disposal...cheers ben regards helinelly...aka neil ;)

Thing to do would be to charge them and see if they hold charge or have you tried that? :D

www.amplepower.com/primer/break-in/index.html

have a look on this site, if you havent allready

nodge

I have been playing with battery reconditioning for the last 2 years.

You might consider pulsed DC charging them. There are some great circuits out there that could get the job done. I have just recently made a video of where I build a battery conditioner.

http://www.youtube.com/watch?v=NP_PwFKIGBM

The joule thief charger has worked great for me on small 12 amp hour batteries.





For larger ones I use a series of transistors in a circuit called a Jetjis charger.




But there are commercial ones as well out there that use pulse charging to remove the sulfur from the plates. Often it takes several cycles to break it off and get the battery to full condition. That is why I have made the battery conditioning circuit.

Do note to get the batteries back to life it does take several cycles to get them to have real life.

i prefer the sealed lead acid flavour personally

So now we find out that Ben is actually Russian! :lol: (around the 35 second mark)
http://www.youtube.com/watch?v=btnIRlBidQc
Well, OK it's not sealed but must taste similar?

[Gotwind Ben]

Ha ha.
Very well noticed :D