Battery draining

LUTHERCHAT

MEMBER
2013 CHEVROLET MALIBU
2.5L
4 CYL
2WD
AUTOMATIC
119,000 MILES

Few days ago my battery started running low after parking it over night. The alternators work fine. When I finally jump start it, it works the whole day and when I check the battery before I park it, it shows me 13.7. In the morning it goes down to 11.5 and cannot crank the vehicle. I dont know if it has anything to do with the PCM because I always get that that error code all the time.

4 Replies

KTECH

MECHANIC
57 POSTS

Go to your local major auto parts store and have them do a free in-car test of your battery. This would be a quick way of checking the life of the battery. Batteries typically only last maybe 3-5 years, sometimes less depending on extreme temperatures hot and cold. The main function of the battery is to start the car, then the alternator takes over. It may be time for a replacement. Good luck and let me know if I can help in any way

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Wednesday, December 16th, 2020 AT 5:11 PM

DANNY L

MECHANIC
5,648 POSTS

Hello, I'm Danny.

You might want to see if the battery cables are clean and tightly connected. If they are you might want to have your battery load tested at an auto parts store. That will tell you the condition of the battery. Here are a few tutorials for you to view relating to batteries:

https://www.2carpros.com/articles/how-a-car-battery-works

https://www.2carpros.com/articles/everything-goes-dead-when-engine-is-cranked

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

https://www.2carpros.com/articles/car-battery-load-test

Hope this all helps and thanks for using 2CarPros.

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Thursday, December 17th, 2020 AT 10:38 PM

LUTHERCHAT

MEMBER
2 POSTS

Thanks. I already fixed it. I had a noco genius battery charger and I used it. Noticed that the port where I plugged the phone charger doesn't turn off with the engine. It keeps running for a long time before it turns off. So I unplugged everything in my car and also turn of the A/C when I park the car and it stopped discharging. Thanks everyone for your encouragement.

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Thursday, December 17th, 2020 AT 11:58 PM

DANNY L