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 ...

Before heading out on a summer road trip, experts say two of the most important systems to check are your brakes and your ...

️ 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 ...

Multiple car battery chargers are tested for charging performance, dead-battery recovery, float charging, spark resistance, heat, and reverse polarity safety. What begins as a comparison between cheap ...

Car batteries rely on a chemical reaction to start vehicles. The age of your battery plays a huge role in its voltage and ability to start a vehicle in lower temperatures. Winter is almost here, and ...

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 ...

How much should we expect to pay a Toyota dealer to address a knock sensor code (either the sensor, the harness, or both)? A: ...

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 ...

Our writer tested nine jump starters and found two models that deliver the right combination of safety, guidance and ...

In September 2020, Tesla rolled out its Battery Day presentation with the kind of confidence usually reserved for moonshots ...