At some point, the 3.6 V of a single lithium ion battery just won’t do, and you’ll absolutely want to stack LiIon cells in series. When you need high power, you’ve either got to increase voltage or ...

An AGM battery, or absorbent glass mat battery, is essentially a more advanced version of a lead-acid battery. There are differences between AGM and standard lead-acid batteries, one of which being ...

Fast charging will power up your phone in a hurry, but is it safe to use? I've heard people worry about this charging myth, but modern phones have made it less scary than it used to be. As long as ...