Start by charging the battery at a slow rate for at least an hour, then measure the voltage. It must be near 12.6 volts. Measure it again with the engine running. It should be between 13.75 and 14.75 volts. Have the generator professionally load-tested to see if if is capable of producing full output of around 90 amps.
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Friday, December 28th, 2012 AT 6:41 AM