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The Top 5 Things That Will Drain Your Battery | YourMechanic Advice


Nov 30, 2015 ... If your lights, radio, and other things are running off your alternator, your car battery ... And even then, bad charging will drain your car's battery.

How to Tell if You Have a Faulty Alternator - CarsDirect


How to Tell if Your Alternator Has Gone Bad A dead alternator can cause all kinds ... Usually, the problem falls into one of two categories: a dead car battery or a ...

Can a dead alternator drain a brand-new battery with a day or two ...


Your FIL is correct the alternator is the most likely culprit. ... If the alternator is dead, but the battery is fully charged, the car can and does use .... If the alternator is bad, then everything electrical is running off the battery and it ...

Five Signs Your Car Battery Is Dead (or About to Die) | AxleAddict


Oct 13, 2016 ... How to Jump-Start Your Car Battery in Ten Steps ... run for 30 minutes so that your alternator can charge up your battery again. ... fuses, radio, alarm, and all other components that might be draining your battery in secret. ... fuel pump, or alternator were bad, or maybe you left your headlights on or your door ....

www.ask.com/youtube?q=Does a Bad Car Battery Drain Your Alternator?&v=_1q40V-BPQc
Jul 24, 2013 ... Bad Battery or Bad Alternator, how to tell the difference (Brief Version) - Auto Information Series ... This video will briefly explain how to tell if you have a bad auto battery or bad alternator. ... How to test your starter: https://www.youtube.com /watch?v=YKQP6. ... Diagnosing a car battery that drains overnight.
www.ask.com/youtube?q=Does a Bad Car Battery Drain Your Alternator?&v=2x0o4-bNCvY
Jun 26, 2014 ... Have you performed a parasitic drain test with every possible fuse removed yet still get ... of diodes to keep voltage from draining from the battery when the car is off. ... Bad Battery or Bad Alternator, how to tell the difference (Brief Version) ... How to check for and fix a battery drain in your car - Duration: 7:1...

Will bad alternator diode cause parasitic drain and still charge ...


Just because your alternator is providing 14v to the OBD system doesn't mean it has enough ... If I leave the batt connected the bad diode will flatten the battery. ... 5) read how many amps your car drains when everything off.

How to Find and Stop Car Battery Drains – DIY ... - Popular Mechanics


Jun 7, 2010 ... There are plenty of energy-robbing devices on your car that are supposed to ... running, and a charging-system voltage test confirms that your alternator is charging. ... Some vehicles will show as little as 10 mA residual drain.

How does a bad alternator drain a battery? - Quora


Sep 7, 2015 ... Alternators generate AC electricity which is then rectified and regulated to properly ... My car battery keeps draining but it's new and the alternator is good. What is causing this? ... Can a car alarm going off drain your battery?

How do I know if my battery or alternator is bad? - Quora


There are several ways: Most cars have a warning light (sometimes called an " idiot light") which ... How does a bad alternator drain a battery? How can you check if the car battery needs changing or if its the alternator thats not charging ... put in a new battery, drive to an auto parts store and ask them to test your altern...