5V 2A Dual USB 18650 Lithium Power Bank Charging Board Circuit Step Up Module 5V2A LED Indicator Charger Module

Specifications:
Input Parameter:5v/1A
Input Interface:V8 interface micro USB
Output Parameter: double USB output:5v/2A
Conversion Rate:90% average
Charging Display:
when charging 0-25% one light is on,other lightis off; 25%--50%,the second light flashes,the first light is continously on;50%-- 75%,the third light flashes,front two lights are continuously on;75%---100%;the fourth light flashes,front three lights are continuouly on.And four lights are on charging to 100%.
Mainboard Protection Function:overcharge protection, overdischarge protection, overcurrent protection.Power does not need protection board.If you have it,please unload.
Installation Introduction:
1.Circuit board B- connects power negative,B+ connects positive.Don't inversely connect,it will result in burning of board.Power is series soldering,so please make sure the insulation between power and circuit when install the battery
2.Double press the switch,flashlight LED light starts,then double press tyrn it off
3.Double press starts flashlight,then press once,light will be lighting.Then touch once start SOS mode,and press one more time turn off LED
4.2A output is not continuous current,it changes according to USB connecting load automatic current output 5.Insurance reisitor.If battery connects incorrectly,the polarity will burn. Size:6.8x3cm/2.68x1.18inch