Can A Bad Battery Cause Alternator Not To Charge. Set the DMM to the 20 volts DC setting. Relay switches that are stuck in the on position can also cause a battery to drain.
Put on your safety glasses. Your stomach sinks as you put in your key only to have your car not turn on. Hi There The first diagnosis of the bad voltage regulator is likely the cause of your charging system not properly charging the battery.
Put on your safety glasses.
You need to ensure to check your battery so that the alternator can begin charging and working again. Using a multimeter you can test battery power. In other cases it may result in the alternator not supplying enough power to the battery resulting in undercharging the battery or not charging it at all. Any number less than that indicates its not capable to charge the level of battery completely.
