A power supply mode setting method is provided, with said method including: in a detection time period, controlling the power regulating circuit (100, 34) in a power transmission state, and detecting a charge current to obtain a detected value; determining...

A charger (10) in one aspect of the present invention includes: a connecting portion (11A, 11B), two protection devices (32, 24; 46, 48), a charging device (18), a control device (30), and a voltage detection device (28). A first protection device (32; 46)...

An overcharge protection device (OPD) is provided that may be used alone, or in combination with conventional charging protection systems, to protect a battery pack from the occurrence of a potentially damaging overcharging event.The OPD is designed to be ...

A protection circuit (200) for a battery pack (100) including a rechargeable battery cell (110) having a positive electrode (111) and a negative electrode (112) is disclosed. The protection circuit (200) comprises a self-discharge switching device (230) co...

A battery charging, discharging, and protection switch circuit with enhanced reverse voltage protection is achieved. The circuit comprises, first, field effect transistor (FET) switches having gate, source, drain, and bulk. The FET switches may comprise ei...