Skip the auto shop - Our mechanics make house calls

Q: Battery replaced, keeps dying out

asked by on

Hello. I have problems with the battery in my car. I had both the battery and the alternator replaced. However, my battery keeps dying. I'm wondering what could be draining the battery. Do you have any suggestion what I should do? Thanks.

If you have a battery that is dying overnight, then you have a major draw on the battery and should have a mechanic isolate what system is causing the draw by removing one fuse at a time until the circuit is isolated. You may have a body module that is malfunctioning or a trunk light that does not go out. Either way, a diagnosis is needed to locate the draw. The new alternator or battery may be defective also and only thorough testing of the battery will reveal the failure.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: 1975 Eldorado convertible trips the 40 amp breaker for the power windows when lowering or raising them. Why and when can you look at this?

There is some device along the power window circuit that is drawing much more amperage than the system was designed for. This short can be caused by a broken wire grounding out on the body and causing a short, corrosion...

Q: Starts and turns off.

I am going to need more info to diagnose this problem. Does the car cut off every time even when you give it gas or does it cut off only when it idles? I would have a technician inspect the...

Q: Alternator belt got torn whilst driving and had new belt fixed but the car won't move on drive or reverse after few seconds drive

This is a sign of a faulty transmission control solenoid. Modern automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's computer activates a transmission solenoid, which directs transmission fluid into the...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...