5V Step-Up Power Module Lithium Battery Charging Protection Board USB (134N3P)

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. Technical Specification: Internally installed charging and discharging power MOS. Preset 4.2V charging voltage, precision ±1%. Max 8uA standby current. BAT Discharging Stop Voltage: 2.9V. Discharging Efficiency: 85%(input 3.7V output 5V/1A). Indication: Charging and discharging When charging: red light flashing. Fully charged: Red light glows for a long time. Integration charging management and discharging management. Intelligent temperature control and over temperature protection. Integration output overvoltage protection, short circuit protection, overload protection. Integration overcharging and over-discharging protection. Support trickle mode and zero voltage charging. Package Includes: 1 Piece- 5V Step-Up Power Module Lithium Battery Charging Protection Board USB (134N3P)