How To Know If It's My Battery Or Alternator. When you have a deceased alternator your battery will also die during normal use. How to know if alternator is bad.
A battery thats missing 4 volts can only run at 50 power. That is the output of the alternator at the battery and that range is needed to keep the battery properly-maintained. If the above steps reveal that the battery is working its time to take a closer look at the alternator.
Dealing with Dead battery or non working alternator in your car.
As such issues with one inherently affect the other. Much like testing your car battery a multimeter can be used to quickly tell whether your cars charging system is adequately keeping the car battery at the proper charge and operating the electrical system at the proper voltage as well. Check the Batterys State of Charge. If your battery is good and your alternator isnt working the battery will still lose its charge because the alternator isnt keeping it charged.
