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Batteries

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How To Jumpstart Your Car
A how-to guide to jumpstart your vehicle in the event of a dead battery. You'll need jumper cables, safety glasses, and a properly starting car.
How to Clean Battery Connections
Cleaning your battery connections, especially if the terminals are corroded, will help ensure the battery lasts longer and performs well.
How to Check a Car Battery
It never fails - you’re in a rush and the kids are throwing a tantrum in the backseat. You go to start your car and all you hear is a...
How to Diagnose a Car Battery Drain
It is safe to say that every car owner reading this has likely experienced that time where you were leaving your home or walking out to your sitting car,...
How to Change a Car Battery
Changing your car battery is a simple and easy automotive repair that you can actually accomplish yourself with the right preparation and a little physical strength. While most people realize...
How to Deal With a Dead Battery
If your battery appears to be dead, try a few steps to start your car before determining if it needs to be replaced or towed.
How to Care for Your Car Battery
How How to Care For Your Car Battery Your car’s battery tends to be neglected until there you have difficulty starting your car, and it is usually when the weather...
How to Fix a Car That Won’t Start
Having a car that doesn't start is frustrating. Try a battery test, fuel pump test, and check the spark plugs to help get your car started again.
How to Buy a Battery for Your Car
Your car battery is a storage device for the electrical power you need to start your car and operate your car’s options. If your car battery isn’t working as it...
How to Check Electrolyte Levels in Your Battery
Part of what makes a modern battery work so effectively is the ‘wet cell’ design they utilize. In a wet cell battery, there is a mixture of...
How to Change Battery Cables
Although simple in nature, battery cables are one of the most important components of a vehicle’s electrical system. They serve as the main connection between the vehicle’s main source of...
How to Use a Battery Charger
Most people who have been around cars for a good chunk of their lives have experienced the hassle and inconvenience associated with a dead battery. Sometimes it simply happens...
How to Buy RV Batteries
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...
How to React If Your Battery Light is On
The battery light or charging warning light, available on the dashboard of your car, indicates malfunctioning or poor charging of the battery. This light illuminates whenever the...
Electric Cars and How They Work
Electric cars use an electric motor driven by a control unit. Their batteries are filled at charging stations and they produce no tailpipe emissions.
How to Attach a Car Battery-Mounted Power Cut-off Switch
Many people who store their vehicle for a length of time like to disconnect the battery from the electrical system of the vehicle. This prevents the vehicle from unintentionally draining the...
How to Replace a Key Fob Battery
Key fobs allow easy access to your car. Once the key fob battery is weak or dead you'll lose your fob's ability to control remote functions.
10 Best Miniature Jumper Packs For Your Car
Jumper cables and jumper packs charge your car battery when it needs a boost. The NOCO Genius Boost Plus is the best spark-proof, miniature pack.
3 Ways to Increase Car Battery Life
Car battery life is 2 to 6 years. Extend the life of your car battery with regular maintenance and turning off the headlights when the engine is off.
How to Replace a Car Battery Temperature Sensor
The battery has a battery temperature sensor that fails when the Check Engine Light comes on, the battery voltage is low, or the RPM curve surges.

Related questions

Question
Was told that the battery is causing the electronic throttle control to not allow the transmission to go out of first gear
Hello. Thanks for writing in. Any automatic transmission can fail with a bad power supply. The technician may not be wrong, but it may be more in-depth than just a bad battery. If you are not noticing any other issues...
Question
I bought a new battery from Walmart 2 months ago to replace the one I had. I went out to crank my van and it struggled to start.
If the battery is dead and it is only 2 months old then return it for replacement. Once you install the battery you should have the charging system checked by a mechanic like one from YourMechanic. The charging system should...
Question
Car makes one click and won't start
Generally, this type of clicking sound will be heard when the starter solenoid is bad or the battery is simply just too weak to turn the motor over to start. Since you just replaced the starter, it is likely that...
Question
Battery keeps dying and is corroded. Is it the alternator or the battery?
The corrosion may have an impact on how well the battery connection transfers the charge from the alternator. It is also possible that you may have a faulty alternator or a weak battery that is not able to take a...
Question
Car wont start
Hello there, many common faults will cause a no start condition on your 2008 Chevrolet Cobalt. The most common fault is the battery, it must be load tested and show the capacity to be able to start the vehicle. After...
Question
Battery light just came on. What could it mean? Is it safe to drive?
This may be a sign of a weak battery, a failing voltage regulator or failing alternator. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while...
Question
Truck lost power when ignition turned off.
A no start diagnostic, performed by a certified Mechanic, will identify the root cause. The first to do is perform a load test on the battery once the battery is fully charged. If the battery fails the load test, that...
Question
Car battery can't keep a charge.
This may be a sign of a weak battery, a failing voltage regulator or failing alternator. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while...
Question
Air conditioner not working after a battery change
Hello. Thank you for writing in. At first, disconnect the battery and verify that all of the wires in the starting system and charging system are clean, dry, and tight. Make sure the battery cables are corrosion free, and have...
Question
When I turn on the starter switch it will click, but will not start.
What you are describing is likely a fault in the starter motor circuit which includes all of the wiring, fuses, relays, ignition switch, starter solenoid, starter, and battery. Somewhere in all that, there is a fault. Occasionally, the fault is...
Question
Do I need a new battery on 2014 Volt if it says Battery Saver Active?
The diagnostic test that is typically used to determine if a battery is good or bad is the "load test". YourMechanic can perform such a test in the field, and if your battery turns out to be bad, a certified...
Question
Charging system failure.
This may be a sign of a weak battery, a failing voltage regulator or failing alternator. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while...
Question
Car won't start after seeing engine hot turn a/c off warning light.
Hi there. Check the battery cables and make sure that they are tight and clean. Then check the battery voltage and see if it has a voltage of 12.6 or 12.4. If the battery is less than that, then the...
Question
Battery died. Now can't get into my car to pop the hood and charge it.
Hi there. The car could have made the door latches locked out. This prevents the doors from opening during an event of power loss during an accident. This happens, but the mechanical key should still open the doors. If the...
Question
New battery is being drained
This may be a sign of a weak battery, a failing voltage regulator or failing alternator. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while...
Question
Starting issues
This may be a sign of a weak battery, a failing voltage regulator or failing alternator. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while...
Question
Battery cells keep dying
The problem is not with the vehicle but the batteries that are defective. I am seeing a lot of batteries on the market that only give 1 year warranty. I thing the other batteries that give more than a year...
Question
Battery replacement.
It is not necessary to use the exact same brand of battery that the vehicle came with from the factory. Although, it is designed specifically for your car it is not required in order for the car to function properly....
Question
Battery light on while driving but then goes off?
The battery light indicates that your charging system has a flaw in it which may be a sign of a weak battery, a failing voltage regulator or failing alternator. As you may know, the alternator is responsible for charging the...
Question
Car battery issue
It is possible the systems that charge the battery and the battery itself may be damaged from the shorting of the wires. I would recommend charging the battery and the recheck the battery holds a load or needs replaced. Then...

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