Cold weather exposes weak batteries fast. Here’s how to spot the warning signs—and replace it before winter leaves you stuck.

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 ...

Is your car battery more than 3 years old? It could be on the verge of dying, and you might not even realize it. Keep a closer eye on how much life it has left by purchasing one of the many car ...

The Askmuse Car Battery Tester is on sale for $20, 46% less than the $37 it’ll normally run you. It’s a simple device, a handheld unit with a few buttons and a screen attached to a pair of testing ...

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 ...

Your car’s battery might seem like a “set it and forget it” part, but when it fails, it can leave you stranded, potentially costing you hundreds of dollars in tow fees or a visit to the mechanic to ...

There’s only one way to answer the question, “Is it my battery, or something else” when your car won’t start: Hook up the best car battery tester and get a readout of what’s going on. Skip the ...

Learn how to make your car battery last longer with this expert advice from CR. These simple steps will catch any battery ...

️ 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 ...

Every single component within your vehicle relies on the battery to function correctly. But how do you know just how good of a battery you have? Easy! You familiarize yourself with the ampere-hour ...

The importance of calibration for all electronic test equipment. The main reason why such equipment must be regularly calibrated. The pros and cons of self-calibration or using outside services. It’s ...