Sooner or later, every car will have a failing alternator, which means drivers could be stranded with a dead battery if it’s not fixed. If you want to know how to test the alternator in a car if ...

There are a lot of dead car batteries across Minnesota this morning. How long do you really need to drive your car to ...

The discharge subscore rates the speed of a battery’s discharge during a test, which is independent of the battery’s capacity. It is the ratio of a battery’s capacity divided by its autonomy. A ...

It can be incredibly frustrating when you’re all set to go somewhere, but as soon as you turn the key in the ignition, you realize your car’s battery is dead. This sudden inconvenience can leave you ...

That's still pretty impressive, given that the Razr is a foldable device, and those phones have traditionally struggled with battery life. The test numbers we use in the above chart reflect the ...

A rating of 100 Ah means that in an ideal world, the battery will deliver 5 amps per hour in this 20-hour test. A higher amp ... battery discharging without alternator recharge.

Portability is also essential when it comes to small battery testers. You want a tester that’s small enough to carry with you, so you can test batteries on the go. When choosing a battery tester ...

Smartphones got better in many ways this past year. They're taking better photos, as you can see in our various 200-photo face-offs between the best camera phones. They're delivering more ...

These results showcase a phone that can easily keep up with heavy daily use, though our expectations for the combination of a 6,000mAh battery and a 3nm processor were a bit higher in some scenarios.

However, most of us can't stay tethered to a wall outlet. Thankfully, you don't have to. The battery market is packed with options that can boost your phone's battery life no matter where you are.

Learn how to troubleshoot a diesel generator that fails to start with this comprehensive guide. Discover common causes, ...