Cold weather kills car batteries fast. If yours is 3+ years old, watch for these warning signs before you're stranded. Here's how to spot a failing battery ...

Other warning signs include any corrosion or white or grey deposits around the battery's terminal, which should be cleaned ...

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 ...

Battery problems rarely arrive out of nowhere. Long before a car refuses to start or a phone dies at 20 percent, small changes in behavior reveal that the power source is struggling. I look for those ...

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 ...

️ 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 ...

Noah is a long-time writer, editor, website developer, and creative based in the United States and currently focused on automotive writing. Electric and hybrid powertrains and battery specifications ...

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 ...

Life test measures how a battery endures repeated charge-and-discharge cycles at hot-climate engine-compartment temperatures. The more cycles endured while maintaining a higher voltage, the higher the ...

Batteries lose capacity over time. The process can be slowed down, but it’s inevitable, so after a few years, your EV won’t provide quite as much range as when it was new. The battery will lose about ...