Rechargeable batteries are, among other things, one of the most crucial tools that you'll want to add to your earthquake emergency kit. When the grid is down, these devices can efficiently power ...

There's no greater disappointment then getting ready for a night on the town, or packing up your car for a nice trip, and your car battery is dead. Next comes the question: is my car battery at the ...

You can check the health of your iPhone's battery to determine when it's time for a replacement.

One of the worst feelings you can have when getting behind the wheel of your car is turning the key in the ignition, and hearing only, "click, click, click, click." That's right. Your car battery is ...

If you go to Settings -> Battery on your iPhone, you can see a lot of stats about the performance and health of your battery. This includes a charge graph that plots the battery percentage of the ...