Car batteries tend to die at the most inconvenient moments, so periodic testing is the best way to avoid these troubles. Knowing what causes repeated battery failures can help you stay ahead of the ...

A car battery is a crucial component that plays a vital role in the operation of a vehicle. Its primary function is to provide electrical energy to start the engine and power various electrical ...

️ Editor's note: This article was updated with new information in December 2025. Dead batteries are a predictable reality for any car that spends more time parked than driven. Battery discharge does ...

You try to turn on your car, and it just won’t start. Maybe the dashboard doesn’t even light up. A likely cause: The 12-volt battery is dead. All cars lose a little battery power when parked. If you ...

The Topdon BT200 Battery and Charging System Tester showed up at exactly the right time. I’ve gotten a couple of sporadic check engine lights from a low-voltage code with no noticeable difficulty ...

Every car battery is some amount of time away from failing, so the only thing for anyone with a car, motorcycle, truck, RV, ATV, boat, or other 12V battery-dependent vehicle can do is to make their ...

Choosing the wrong replacement battery can turn a reliable daily driver into a car that struggles to start, especially in extreme temperatures. Consumer Reports has highlighted several car battery ...

“Saved me from having to purchase a new battery,” said one shopper. As with your personal health care, preventative maintenance goes a long way in ensuring the dependability of your vehicle. A battery ...

My “unicorn” Volvo V90 plug-in hybrid wagon is almost four years old. Here’s how healthy its high-voltage battery is.

MotorTrend has been a trusted source for objective test data on new cars since October 1949 when we published our first 0–60-mph times in the second issue of the magazine. Ever since then, we’ve built ...