So not only will the MH-CD42 charge your lithium-ion cells when given a nominal USB input voltage (4.5 – 5 VDC), it will also provide essential protections for the battery. That means looking ...

There are actually a few ways to charge your phone up fast to get it back to where it needs to be, even if your phone is clinging to its last percentage. It's never a great idea to leave the house ...