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Tool Talk Discussion Forum

Re: Li-ion battery died.

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wilson ind

02-10-2013 11:25:17

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old friend along the line of battery charging. I found that my 12 volt charger works well on the 2 8 volts in series. Voltmeter on cart showe 17.5 after a few hours. Sure is a rainey afternoon in southwest ind. Would you happen to be going to louisvillr ky this week.

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George Marsh

02-11-2013 16:53:30

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 Re: Li-ion battery died. in reply to wilson ind, 02-10-2013 11:25:17  
Do a hydrometer test and see if your cells are all the way up. My guess is they are not. My memory isn't as sharp as it once was. Something says a fully charged cell is around 2.2 volts. So, you have a total of 8 cells x 2.2 v = 19.6 volts.

FYI, my 18 v dewalt batteries measure around 20 volts. Wonder if we could modify an 18 v cordless charger to trickle charge your 2 8 volt batteries?

I found an old 18 v ni-cd trickle charger. I rigged it up tonight to charge my dead 18v Li-ion. Unlike my dewalt charger, this charger doesn't shut off, it's mechanical, no brain box. It's charging the ion battery at .25 amps and a tick over 20 volts. Can't see how this will hurt an already dead battery.

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