Battery not holding charge

WOODY_JONES82

MEMBER
2014 SUBARU CROSSTREK
2.0L
4 CYL
4WD
AUTOMATIC
100,000 MILES

My battery was replaced last year. Car has been sitting and now the battery is not holding a charge. It's okay if I run it daily, but if I miss a day, it drains. Would it be the battery or alternator?

Sunday, April 19th, 2020 AT 3:42 PM

1 Reply

ASEMASTER6371

MECHANIC
52,797 POSTS

Good evening,

I attached a guide for you to follow for checking for a draw.

https://www.2carpros.com/articles/car-battery-dead-overnight

You need a voltmeter for this test. Remove the negative cable and put the red lead on the battery post and the black lead on the cable. Set the meter to DC amps and measure the current flow. It should be no more than 50-75 milli amps.

https://www.2carpros.com/articles/how-to-use-a-voltmeter

If it is more, remove the fuses one by one until the draw drops. then you know the circuit that is causing the draw.

Roy