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

This is a 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 & a high-quality USB iron with a cheap display port video card and integrated circuits. Note: Product may vary in terms of design. Features: 1. BAT Discharging Stop Voltage: 2.9V. 2. Discharging Efficiency: 85% (input 3.7V, output 5V/1A). 3. Charging and discharging indication. 4. Internally installed charging and discharging power MOS. 5. Preset 4.2V charging voltage, precision ±1%. 6. Max 8uA standby current. 7. Integration of charging management and discharging management. 8. Intelligent temperature control and overtemperature protection. 9. Integration of output overvoltage protection, short circuit protection, and overload protection. 10. Integration of overcharging and over-discharging protection. 11. Support trickle mode and zero voltage charging. 12. When charging: red light flashing. 13. Fully charged: The red light glows for a long time. Package Includes: 1 x 5V Step-Up Power Module Lithium Battery Charging Protection Board.