BLUE SINGLE USB Power Bank Circuit With LED Indicator & LED Light Input 5V 2A Micro USB Socket Output 5V 2A USB For 3.7V Battery 18650 Battery Charging Module

Charging Display:

• When charging, battery level 0-25% one light is on, other lights off;
• 25%–50%,the second light flashes, the first light is continuously on;
• 50%– 75%,the third light flashes, front two lights are continuously on;
• 75%—100%;the fourth light flashes, front three lights are continuously on.
• And four lights are on charging to 100%.

Mainboard Protection Function:

• Overcharge protection
• Over discharge protection
• Overcurrent protection
• Module does not need battery protection board as it has inbuilt
• battery protection system.

Installation Introduction:

• 1.Circuit board B- connects power negative, B+ connects positive. Don’t inversely connect, it will result in burning of board. Make sure there is insulation between power and circuit when install the battery
• 2. Press and hold the switch, flashlight LED light starts, then press and hold to turn it off
• 3. 2A output is not continuous current, it changes according to USB connecting load, automatic current output as per load
• 4. If battery is connected incorrectly, the reverse polarity will burn the circuit. So, make sure to check the battery polarity when connecting.

Special Instruction:

• When connecting the board for the first time, connect the battery and then connect the micro USB charger and charge the battery to full capacity before using.
• It is required to prime the IC, so that it starts and shuts down accurately

Note:

• Please allow 1-3mm error due to manual measurement.
• Due to the difference between different monitors, the picture may
• not reflect the actual color of the item.