NAB836 5V Boost Step Up Power Module Lithium LiPo Battery Charging Protection Board LED Display USB For DIY Charger 134N3P Program
1.Input Voltage:3.7V~5.5V
2.Charging Current:1A(max)
3.Output Current:1A(max)
4.Output voltage:5V
5.BAT Discharging Stop Voltage:2.9V
6.Discharging Efficiency:85%(input 3.7V output 5V/1A)