A problem can arise when you battery is extremely discharged, for example;  a light is left on in the vehicle and the battery voltage drops below 7 volts.  Some chargers will not charge a battery when the voltage is that low and you will have to take it to a professional to charge it for you.  Chargers are getting better and there are some on the market that will start at 3 or even 0 volts.  The problem is that the battery has developed an extremely high internal resistance (caused by sulfation) and the charger is not strong enough to push current through the battery.

2013-06-28T06:13:25+00:00June 28th, 2013|

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