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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)
Multifunctional and Safe: 4 in 1 Charging / Discharging / Lithium Battery Protection / Battery Level Indicator Module.

Lithium battery protection function:

over-current, overvoltage, over-temperature, short circuit protection.
High Power High Efficiency:

Discharge efficiency up to 96%. 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. Allow discharge while charging. (Attention: At this time output voltage 4.7 / 5V)
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.
Widely Applications: This module can be applied to solar panel turning to mobile phone charging, car charging retrofit, driving recorder power supply, household power supply, intelligent plugging transformation, fast charging adapter, etc.

Product description:

Parameter:
Charging (Voltage: DC 4.5V-5.5V (DC 5V recommended) , Current: 0-2.1A, Quiescent current: 100uA)
Full Voltage: 4.2V¡À1%
Discharge (Current: 0-2.4A , Quiescent current: 50uA , Efficiency: up to 96%)
Output Voltage: 5V
Output Current: 0-2.4A
Ambient Temperature: -20¡ãC to + 85¡ãC
Size : 25 * 16 * 4mm
The module comes with lithium battery protection function£º
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

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