Quote:
Originally Posted by raggedjim
Some of the newer battery chargers will not charge a battery if the voltage drops too low. If you have an older charger you may be able to use it to get it up (assuming no shorted cells or battery defects). If I have a problem battery I breakout my grandfathers charger and let it go for about 2 hours. That thing will cook a battery if you don't watch it!
Good luck, Rg
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This^^^^^^^^^^^^^
Set the old school charger to the lowest amp setting (mine is 2 amps) until you see 12v and then switch to the smart charger.
Keep an eye on it and make sure the battery is not getting hot!