What Makes Car Battery Drain Fast. Can a bad alternator drain a car battery. Your system can be running on high brightness or other advanced options.
Typically car batteries have a lifespan of 4 to 5 years. It all depends on how much you drive your car do you live in a. Your car battery is still powering some components once the engine is turned off such as the clock and anti-theft features.
The alternator tested fine and my ground cable and both battery terminals are new.
With the negative terminal disconnected a healthy car battery will only self-discharge at 5 per month. Your car battery is still powering some components once the engine is turned off such as the clock and anti-theft features. A typical car battery will drain in 2-3 weeks and be unable to start your car due to the parasitic draw from the cars electronics. How Fast Your Car Battery Will Drain.
