Single-cell lithium battery charge/discharge voltage regulator module

Single-cell lithium battery charge/discharge voltage regulator module:
Maximum charging current: 1000mA; Charging cut-off voltage: 4.2V; Battery over-discharge protection voltage: 2.4V;
Maximum output current: 2A (recommended for use within 1A)
; Output voltage: 4~12V (can be modified to higher output).
 
Type-C and its adjacent VIN+ and VIN- are the power input terminals, connected to a 5V input voltage. B+ connects to the positive terminal of the lithium battery, and B- connects to the negative terminal. OUT+ and OUT- are the outputs connected to the load. A blue light illuminates, and a rapidly flashing red light indicates power is connected. After connecting the battery, only the red light illuminates; a constantly lit red light indicates charging. The blue light illuminates after a full charge. When power is connected, current is drawn from the power input terminal; otherwise, current is drawn from the battery. The output automatically shuts off when the battery voltage drops below 2.4V.
Note: When connecting the battery for the first time, there may be no voltage output; power must be applied to the power input terminal to activate the protection circuit. When using a mobile phone charger, the output must be at least 1A; otherwise, charging may not be normal.