2in1 charge discharge board module DIY 18650 lithium battery Power Mobile Bank

2in1 charge discharge board module DIY 18650 lithium battery Power Mobile Bank

5V Step-Up Power Module Lithium Battery Charging Protection Board USB For DIY Charger 134N3P  Lithium Battery Charging Protection Board Boost Converter LED Display USB For DIY Charger 134N3P High-Quality USB iron with Cheap display port video card and Integrated Circuits.

Key Features:

• BAT Discharging Stop Voltage: 2.9V.

• Discharging Efficiency:85%(input 3.7V output 5V/1A).

• Charging and discharging indication.

• Internally installed charging and discharging power MOS.

• Preset 4.2V charging voltage, precision ±1%.

• Max 8uA standby current.

• Integration charging management and discharging management.

• Intelligent temperature control and overtemperature protection.

• Integration output overvoltage protection, short circuit protection, overload protection.

• Integration overcharging and over-discharging protection.

• Support trickle mode and zero voltage charging.

• When charging: red light flashing.

• Fully charged: Red light glows for a long time.