[COLVERT]

Originally Posted by patrolman pete

An old way that the AA used to test batteries was to charge by running the engine for 5 mins , then disable the engine by pulling a fuse so that the car would crank but not start. Crank the engine for 15 seconds and listen to the cranking speed , and if it starts to drop , the battery is unserviceable . That is a live drop test and is pretty conclusive.

Funny old lot the AA if that was standard procedure.---The engine running bit.---That would be of no use at all before the cranking test.----

Quote.--- That is a live drop test and is pretty conclusive.



Also very bad for the starter motor. ( unless you have shares in the selling of starter motors.--- )