A battery charge controller is an essential part of a power system that charges a battery because it can keep the battery safe for a long term. A charge controller, in principle, is an electronic ...

Google has confirmed that Pixel phones with the new 80% charge limit support bypass charging. When 80% charge is detected, the battery stops charging, but current is still used to power the handset.

For low-power devices powered by alkaline or lithium primary batteries, every microampere of current becomes critical for extending battery life and increasing the time between battery replacements.