How To Tell If Alternator Is Charging Battery. One way to understand alternator overcharge is to inflate the battery. When you start up your car look at your interior lights.
This starts the engine running which puts the alternator into action. Starting and running an engine in its simplest form is a three-step process. It can be hard to determine if youre dealing with a battery or an alternator problem.
This in turn makes the alternator keep charging the battery at a higher than normal rate.
If the liquid electrolyte leaks out of your car battery you know that your cars alternator is overcharging. Excess hydrogen enters the battery due to the faulty alternator. When a car doesnt start many people wonder whether the alternator or the battery is to blame. If you have a voltamp gauge it will read the alternator output.
