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 ...

“I firmly believe this is one of those products everyone should have on hand.” Right now at Amazon, the Ancel Plus Car Battery Tester is on sale for just $56 while it’s half-off, and it offers a ...

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 ...

We may receive a commission on purchases made from links. When you think about your car, the primary power generator in your mind may be the engine. It's true that the engine is responsible for ...

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 ...

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 ...

A battery management system (BMS) monitors and controls batteries in vehicles such as more-electric aircraft and electric cars. It needs to undergo rigorous tests under nominal and extreme conditions ...

When working on electrical projects around the home—whether that’s troubleshooting an issue with your HVAC system, repairing an appliance, or testing a car battery—a multimeter is essential. These ...

️ 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 ...

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 ...