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・Save up to 30%

Get a quote

What others are asking

Q: Having issue with headlights and blinkers on my car

Hi there. If the blinker issue started at the same time as the headlight problem, then it is usually cause by a bad combination switch. This switch fails internally and causes this to occur. It can also be an issue...

Q: Fuel filter failure or timing chain?

I'd suggest to have a mechanic do a complete under car inspection. You need to verify what your friend said about the timing cover gasket coming off, as this may be a problem that needs fixed immediately or not. The...

Q: i was driving down the expressway playing with the cruise when it just stopped running i have power but when i turn the switch

The cruise control should not be related to anything in your vehicle that would otherwise cause it to die. However, this is a known issue with the Chevy HHR and is often a result of unresolved electrical issue. I would...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.