An expert who has achieved level 3 by getting 1000 points
An expert that got 20 achievements.
An expert that got 10 achievements.
An expert that got 5 achievements.
Re: battery drains overnight
First thing you need to do is make sure battery is fully charged & have it load tested. If that and the rest of your charging system checks out, then you'll have to test for a battery draw, when vehicles off.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
First, make double sure that there is nothing left on that would drain your battery. Secondly, if you have ANY doubts about the integrity of your battery (even if it tests out O.K. at your local parts store), replace it.. Myself, if my vehicle ever fails to start correctly , I get a new battery. In the long run, poor batteries are the most expensive batteries you can have. Batteries can also have an intermittent internal problem that cannot always be detected by testing. My opinion, in a nut shell is that you need to replace your battery.
You may want to check the built in trio-diode in your alternator. This lets current flow one way when it is ok. When defective, current will flow both ways & this will run your battery down.Take a fluke meter & see if there is excess voltage draining when car is turned off. You can replace the trio-diode or the complete alternator. GOOD LUCK, ROBERT OLIVER
First have your battery load tested, and your alternator checked for proper charging amperage. If that is ok then you have what is called a parasitic drain that is draining your battery overnight. A parasitic drain test will need to be ran and repairs made.
Does it start if you jump it? It sounds like the battery is going dead overnight. Check to make sure that there are no lights staying on (interior, trunk, glove box, etc.) that would drain the battery. If the battery is more than two or three years old, it may have a dead cell. It will take a charge and appear to be okay, but runs down very quickly. Most auto parts stores will be happy to check your charging system and battery at no cost.
I have had this problem with a few of my cars and I thought the same that my battery was gettin drained by the stereo but really my battery was going bad hich resulted in the radio staying on for some odd reason, but i replaced the battery and all is good with no more problems, so I would take my battery down and have it tested.