Can A Bad Alternator Kill A Brand New Battery. The alternator can comfortably make 100A at 2000 RPM. Yes you still have a problem when you have a new battery and a bad alternator because a bad alternator can destroy a working battery when it charges it using too much voltage.
If your car wont start its often due to a malfunction of either the battery or the alternator. Several factors will affect the new battery. 415 1359 Views.
Yes you still have a problem when you have a new battery and a bad alternator because a bad alternator can destroy a working battery when it charges it using too much voltage.
The alternator can have a bad diode which allows AC to flow to the battery. Alternator is an easy sell for a shady mechanic if the car needed one or not. At idle the rotor is spinning slower and the alternator is incapable of making its full rated current. Signs of a Bad Alternator or Battery.

