Vehicles equipped with diesel engines may have two batteries onnected in parallel in order to provide additional current at the same voltage. technician a says to successfully test teh batteries, they should be disconnected and tested separately. technician b says that a fault in one battery has no effect on the other battery. who is right?

Technician A is right.

Explanation:

Parrallel connected batteries give out more current than a single one and this current is necessary for starting/cranking the diesel enginge. The parallel connection gives 12.6 volts but it increses the amount of current which is supplied by a single battery of the same rating. In order to test the batteries, they must be separated so that their discharge and charge rates are checked separately and see which one causes the problem.

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