While an on-board diagnostics scanner is a great tool for figuring out what’s wrong with your car, it won’t provide much data ...

This 10-second headlight test reveals battery health by checking if lights dim during startup, helping predict failures ...

Testing your battery regularly will prevent a dead battery from ruining your day. There’s only one way to answer the question, “Is it my battery, or something else” when your car won’t start: Hook up ...

Autoblog aims to feature only the best products and services. If you buy something via one of our links, we may earn a commission. Aug 27, 2025 4:00 PM EDT Is your car battery more than 3 years old?

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 ...

“Saved me from having to purchase a new battery,” said one shopper. Autoblog aims to feature only the best products and services. If you buy something via one of our links, we may earn a commission.

️ Editor's note: We will be updating this article in the coming months to reflect long-term testing. Dead batteries are the silent killers of garage-kept cars. If you store your car for any stretch ...

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 ...

Changing a car battery can be done in just a few steps. Always test the car battery before replacing and be sure to properly ...