Q: Why does my new battery keep dying?

asked by on

Older car that still runs well,but only gets driven every other weekend. So I don't understand why five months after buying new battery it is completely dead. Took battery to parts store for recharge and said battery wouldn't hold charge. Some electrical doesn't work or has been deleted. Radio was stolen have not replaced yet. Alarm will go off maybe one or two times every few days if someone's engine is too loud. But if battery is new and car doesn't move for two weeks how can battery be dead?

My car has 75000 miles.
My car has a manual transmission.

Hi there:

Some of the top reasons why your battery won’t hold a charge are listed in your question. If the radio was stolen, and not repaired or replaced, it’s possible that you’ve got a slow electrical current being drained from those wires that are not completing the circuit. Also, if your alarm or other accessories are active without starting the vehicle to engage the alternator, this can also draw cranking amps from the battery. It’s always a good idea to start your vehicle for a few minutes once per week at least if it’s not in use frequently; to avoid this type of issue. The problem may also be caused by a malfunctioning alternator that needs to be replaced.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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!
  1. Home
  2. Questions
  3. Why does my new battery keep dying?

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: My clutch pedal goes up and down but when I change gears it doesn’t return up all the way on its own

Hi Anthony. Thanks for contacting us today. Typically this issue is caused by either a faulty master or slave cylinder. It could also be due to a clutch fluid leak. To know for certain, a clutch inspection from a professional...

Q: My '99 Camry has been sitting in my garage for 7 months. Now it won't turn on. No dash lights, no radio, nothing. Advice?

It's not unusual for a battery to go dead when a car is parked for a long time. Modern cars draw a small amount on the battery to keep various computer memories alive, so if the car is not operated...

Q: Power loss, check engine light comes on and off

It seems you have a few things going on. As far as the steering issue goes, this may be fixed by having the vehicles suspension alignment adjusted. Next, have an experienced technician, like one from YourMechanic, scan the vehicle and...

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...
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.