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4 in 1 Charging + Discharging + Lithium Battery Protection + Battery Level Indicator Module. Lithium battery protection function: over-current, overvoltage, over-temperature, short circuit protection.
MCU users, if you accept a small load KEY can be connected to the microcontroller about 20s to provide a low level allows the module to continue working. Trigger mode: low level trigger (ground)
In discharge mode (The charging mode KEY function is invalid), trigger the KEY port once to open the output; continuously trigger the KEY port twice to close the output.
The first time the load is connected, the output is automatically turned on. If the load is less than 50MA, the output will be automatically turned off after 30 seconds; if the load is greater than 50MA, the output will be automatically turned on.
Allow discharge while charging. (Note: At this time output voltage 4.7 / 5V)
It is made of electronic accessories, nickel plating on surface(anti-oxidatioan), inner conductor: pure copper.it is long lasting and durable for you to use. Parameter: Charging voltage: DC 4.5V-5.5V (DC 5V recommended) Charging current: 0-2.1A Charging quiescent current: 100uA Full voltage: 4.2V+ -1% Discharge current: 0-2.4A Discharge quiescent current: 50uA Discharge efficiency: up to 96% Output voltage: 5V Output current: 0-2.4A Ambient temperature: -20℃ to + 85℃ PCB board process: Shen Jin Size : 25 * 16 * 4mm The module comes with lithium battery protection function: Over-current protection (OCP) Overvoltage protection (OVP) Short Circuit Protection (SCP) Over-temperature protection (OTP) Charge and discharge power level 4 interval indicati Pin description: VIN: Charge Port Positive Input + GND: Charger Negative Input - BAT: Lithium Battery + GND: Lithium Battery - GND: Output Negative Output - OUT: Output Positive Output + KEY: Output Enable Trigger Port (Low Pulse Trigger) Applications: Car charging retrofit Driving recorder power supply Mobile power Portable devices such as mobile phones and tablets Package Including: 4 * 2A 5V Lithium battery charging protection module