Specification:
Input Voltage: 5V
Cut-off Voltage: 4.2V ±1%
Maximum Charging Current: 1000mA
Battery Over-discharge Voltage: 2.5V
Battery Over-current Current: 3A
Size: 2.5*2cm / 1*0.8in
Quantity: 10pcs
Weight: 27g / 1oz (approx.)
Current Adjustment
RPROG (k)
IBAT (mA)
30
50
20
70
10
130
5
250
4
300
3
400
2
580
1.66
690
1.5
780
1.33
900
1.2
1000

Package list:
10 * Charging Boards

Instruction:
When connecting to battery for the first time, there may be no voltage output between OUT+ and OUT-, then the circuit need to activated by connecting to 5V. The circuit also need to be activated if battery is disconnected from B+, B- then connect again.
The output current of phone charger should be no less than 1A, otherwise it may not normally.
The Micro USB socket and the "+ -" solder pad next to it are power input, and should connect to 5V voltage.B+ is connected to positive pole of battery, B- is connected to negative. OUT+ and OUT- are connected to load, for example, mobile boost board or other loads.
Connect battery to B+, B-, then phone charger to Micro USB socket; the red light on means it is charging, green light mains fully charged.

Note:
1. The charging current is batter to be 0.37 times of the battery capacity, e.g. for a 1000mAH battery, the charging current should be 400.
2. If 5V input voltage is higher, 5.2V or 5.5V, for example, can cause lack of charging current less than 1000mA, this is normal.The high voltage will cause chip fever and it will automatically reduce the charging current, in order to chip from burning.Chip temperature reaching 60? is normal when it is working.