Skip the auto shop - Our mechanics make house calls

Q: Battery keeps dying

asked by on

My car battery keeps dying, and when I get a boost off it make my lights flicker and it don't leave my car on long before it act as if it don't want to take off or stay on but it never cut completely off unless I cut it off and when I cut it off it doesn't crank unless I have a boost off
My car has an automatic transmission.

A: The first thing to do is to have the batter...

The first thing to do is to have the battery fully charged and tested to see if it can take a load of at least 150 amps for 15 seconds. If battery is not holding a charge or load then replace battery. If the battery test good or the battery is replaced then have the charging system tested to see if the alternator is putting out about 13.5 volts and over 60 amps at 2000 rpms. If the alternator test bad then check the wiring to the alternator is not damaged and replace alternator. The system should be checked by a qualified mechanic like one from YourMechanic that can come to your location and repair your vehicle for you.

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: On start AC is working fine, after 5-10 mins i am starting to hear loud fast clicking noises.!?

The compressor clutch on the vehicle may be caused by an excessive clutch to pulley gap or an excessive resistance in the compressor field coil. A check on the gap in the pulley to clutch can be performed by using...

Q: how much it will cost to the front fender and part of front bumper the dent was brought out but there are little bumps

Hi there. Unfortunately, our mobile mechanics are not equipped to provide body repair services. It would be a better idea for you to contact a local body repair shop in this case. Thanks.

Q: Car is dead, no signs of "life" at all.

Since you ran the battery dead several times before you replaced the alternator, you caused the battery to get sulfated internally. The lead acid inside a battery will only last for so long. Most batteries will last between 3 to...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.