Features:

• 100% brand new and high quality.
• This module is used for charging single lithium battery or several lithium batteries in parallel, charging port powered by USB.
  
• Input with a Micro USB socket can directly connect to a mobile phone Micro USB charger to charge lithium battery.
  
• It also has wiring solder joints which can be very convenient for DIY.
  
• The module can be used for 3.6V, 3.7V 18650 and lithium polymer battery charge and discharge protection.

Specification:
Input Voltage: 5V
Charge Cut-off Voltage: 4.2V ±1%
Maximum Charging Current: 1000mA
Battery Over-discharge Protection Voltage: 2.5V
Battery Over-current Protection 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 protection circuit need to activated by connecting to 5V. The protection 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 charge 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 ammeter used to test current can only be connected to 5V input of board in series.
2. 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.
3. The charging connection wires cannot be too thin nor too long, otherwise it will result in a big connection resistance.
4. Keep a good connection of contact with the battery.
5. 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 protect chip from burning.Chip temperature reaching 60℃ is normal when it is working.
6. Reverse connection at output (battery) will burn out the chip, please be aware.