Learn how to check your Android phone's exact battery health percentage and Charge Cycle Count. Step-by-step instructions, ...

Button cell, or coin cell, batteries are ubiquitous in toys and household products. They’re also uniquely dangerous to young children. If swallowed, a button battery can burn tissue inside the ...

Ryobi 4V USB Lithium batteries are really convenient and easy to recharge and have a really easy way to see if they are fully charged.

A growing list of medical associations are pushing for battery manufacturers to make a button or "coin cell" battery that will not lead to devastating injuries when swallowed.