Skip the auto shop - Our mechanics make house calls

Q: New battery goin dead over nite

asked by on

Ok it started when i was jumping my nrwfews car caused my radio to burn out i changed fuses still nothing so oh well no radio but the problem is even after getting a new battery for my car this is the 5 th battery in less then a year and only does it in colder weather . My battety goes dead over bite i make sure all the lights goes off when i get out of my car and turn everything off . It didnt get very cold last nite but it was dead when i got in it to go to work today . Had the alternater checked they said was fine just andead battery . Any ideas plz help single mom working two jobs cant agford a new car

My car has 14700 miles.

A: Hi there. To check to see if something is ...

Hi there. To check to see if something is still on with the key on, remove the ground cable to the battery and put a digital volt ohm meter (DVOM) on the cable and onto the battery negative post. With the key in the off position, there should be no power, however, if something was to be active, there would be power. If the meter shows up with a small 0.2 voltage, then that is normal. If the voltage is 1 volt or more, then you have a parasitic draw (something staying live draining the battery with no way of charging it).

For the battery to drain overnight, there has to be a voltage of 5 volts or more present. The way to check this is remove one component at a time. For your radio that is not working, remove the power wire to the radio and if the voltage drops to 0, then the radio is the problem. If the radio is not the problem, continue unplugging one thing at a time until the meter reads 0. Then fix that part to keep your battery from draining. If you need further assistance troubleshooting your vehicle, then seek out a technician, such as one from YourMechanic, that can assist you with your battery issue.

Was this answer helpful?
Recommended services
Get a Quote

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

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: Will a radiator from a 09 impala fit

The radiator from the 2009 Impala does not cross reference to the 2000 Lumina, probably partly because the 2009 Impala engine is larger and so requires more cooling capacity. Depending on your VIN number, it looks like all model year...

Q: Is a flush okay for an older transmission? Or should you stick with a drain and fill.

Most transmission repair shops and mechanics that say they are flushing your transmission are really just transferring your fluid out and new fluid into your transmission. This fluid transfer will take twice the amount of fluid that a normal drain...

Q: Power steering goes out

Hello. Your vehicle could have one of two power steering systems. If you have a traditional power steering system, with a power steering pump, power steering hoses, and rack and pinion, a malfunction of any of those components could be...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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.