5db 5V Boost Converter Step-Up tápmodul lítium akkumulátor töltésvédő kártya LED kijelző USB barkács töltőhöz 134N3P
5pcs 5V Boost Converter Step-Up Power Module Lithium Battery Charging Protection Board LED Display USB For DIY Charger 134N3P
if you choosing on a small package and must arrive, please do not buy, we have no way to control the small package logistics, very sorry for it
Product Introduction:
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)
Features:
1.Charging and discharging indication
2.Internally installed charging and discharging power MOS  
3.Preset 4.2V charging voltage, precision ±1%
4.Max 8uA standby current
5.Integration charging management and discharging management
6.Intelligent temperature control and overtemperature protection
7.Integration output overvoltage protection,short coircuit protection,overload protection
8.Integration overcharging and overdischarging protection
9.Support trickle mode and zero voltage charging
When charging :red light flashing;
Full charged :red light light for a long time.
1005001658803431 - blackh