While only 12 of the 203 reviews award the MM420 fewer than 4 stars, there are some issues worth noting. The most common ...

Why your phone charges quickly one day but slowly the next, or why electric cars still take an hour or more to charge, is a matter of how lithium ions move into a battery’s electrodes. Scientists ...

Android keeps working with the original assumption that the phone’s battery capacity is 5000 mAh, even when it has degraded ...

Forget cell-to-pack and cell-to-body battery designs. This EV battery company is proposing something entirely different.