Q: Battery being drained

asked by on October 14, 2016

For some reason my car battery keeps getting drained , I have had my battery , alternator and starter checked and they are all fine but my car battery keeps dying and no one knows why !

Battery is dead Inspection $79.99 - $89.99 Get a Quote
Electric Problems Inspection $79.99 - $89.99 Get a Quote

Without knowing a make or model of the vehicle, it is impossible to narrow down the issue. Parasitic draws, or battery drain, doesn’t have to come from the starting system. The problem can be anything electrical on the vehicle.

Drains are usually traced down using a voltmeter or comparable tool. The usual systems to blame for these issues include alarm systems or anti-theft systems. You may not even be aware you have one on the vehicle until something goes wrong with it.

Radios, especially aftermarket ones, are also high on the list for having these issues and draining the battery. Have any electrical components been damaged or failed recently? These would be places to check as well. Another trick you may want to try is running a scan on the engine. If an electrical component is reading outside of its normal range, say from a short or something, it may show itself there. Have a professional mechanic, such as one from YourMechanic, perform an electrical inspection to see if this is the source of the problem.

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

What others are asking

Battery won't keep charge, car slow to start.

Its sounds like you could have a parasitic drain on your battery. You would need to have a technician trace where it is coming from. A common problem is with interior lighting in the car. There may be a shorted...

Headlights dim when revs drop while driving

Check the battery and have the alternator load tested. A lot of times it is as simple as you needing a new battery or an alternator. You can get the car load tested or try or test the alternator yourself....

Engine steam and antifreeze leak - 1976 Mercedes Benz 450SL

Hello. This sounds like the water pump, radiator, radiator hoses, or even one of the heater hoses, have started to leak. It is also possible that the gasket to the thermostat could have a leak as well. It doesn’t sound...

How do you replace the battery in the remote for a Ford Fusion?

Your car’s Remote Entry system is certainly convenient. It provides you with the means to lock or unlock the doors from a distance, open the trunk, and even set off a panic alarm if you feel threatened. Of course, the...

engine wont turn over with new starter and battery in

You need to check the large cable from the battery down to the starter to see if there is power present at the starter through the cable. If you have no power to the starter's main wire then you may...

Can a Car Battery Overheat in Hot Weather?

People often only think a battery will get damaged in the winter. However, the summer heat can be even more damaging than the winter’s cold temperatures when it comes to car batteries. The summer heat is when most of the...

my battery wont charge and its good and altenator is to whats wrong

If the battery will not hold a charge, then it may be bad or has a draw on it causing the drain. I recommend having the battery checked to see if the battery has a draw. Check to make sure...

Car losing gas mileage and not much power

Hello there, thank you for asking about your 1989 Buick Reatta. Vehicles lose both mileage and power over time - especially after 27 years! The only way to combat this is by keeping up on your maintenance and repairs. A...

vehicle won't turn on or start.

Hi there. Check the battery and see if it has a full charge. If the battery has a full charge of 12.6 volts, then put a load tester on the battery and check to see if the battery will hold...

Related articles

How to Start a Car in Cold Weather
Battery, oil, and fuel problems can make a car difficult to start in cold weather. Find out how to prevent starting issues related to weather.
How to Buy RV Batteries
RV RV (recreational vehicle) batteries come in many different types, and what type is best depends on the useage and conditions the RV will be exposed to. Unlike cars, RV’s use multiple batteries. These batteries are used to power many...
All About Car Battery Chargers
Everyone Everyone has experienced a dead car battery from time to time. It’s common occurance, especially in winter, when batteries have to work even harder to get you to where you want to go. Fortunately, there’s a solution. A portable...