5V Step-Up Power Module Lithium Battery Charging Protection Board USB For DIY Charger 134N3P

This is 5V Step-Up Power Module Lithium Battery Charging Protection Board USB For DIY Charger 134N3P. It’s a 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. Note: Product may vary in terms of design. 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. Package Includes: 1 x 5V Step-Up Power Module Lithium Battery Charging Protection Board.