18650 Battery 3.7V To 5V2A Boost Module DIY Power Bank Mobile Power Motherboard Step-up Circuit BoardItem NO.: MK00899

18650 Battery 3.7V To 5V2A Step-up Module

Product Introduction:

1. Input parameters: 5v/1A

2. Input interface: V8 interface mini USB

3. Output parameters: Dual USB output: 5v/2A

4. Conversion rate: average 90%

5. Width: 2.6CM Length: 6.9CM

6. The parallel connection of batteries between 3.2 and 4.2V requires normal operation, and the Z value cannot exceed 200000 milliamperes

Safety Design:

1. The power supply is designed with overcharge, over discharge, and short circuit protection, so there is no need to worry about charging time

2. Intelligent output. After the device is fully charged, it automatically stops charging to prevent overcharging

3. The power supply adopts multiple safety designs, ensuring stable output voltage and current without damaging user equipment

4. Wide working temperature range (-20 Clecius 50 Clecius), providing over temperature protection

Functional Features:

● Adopting a bright LED light (long press or double-click the power button to start)

● Battery display: Level 4 LED light displays battery level, and will intelligently turn off when not in operation

● Charging display: When charging 0-25%, one light is on and the other lights are off; 25% -50%, with the second light flashing and the first light continuously on; 50% -75%, the third light flashes, and the first two lights continue to light up; 75% -100%; The fourth light flashes, and the first three lights continue to light up. Four lights are charging to 100%.

● Main board protection function: overcharge protection, overvoltage protection, overcurrent protection. The power supply does not require a protective board. If so, please uninstall.

Installation Introduction:

1. Circuit board B - connect to the negative pole of the power supply, and B+connect to the positive pole. Do not reverse connect, otherwise it may cause the circuit board to burn out. The power supply is welded in series, so please ensure insulation between the power supply and the circuit when installing the battery

2. Double click on the switch, the flashlight LED indicator light will light up, and then double click on the switch

3. Double press to start the flashlight, press again, the indicator light will light up, then touch once to start SOS mode, and press again to turn off the LED

4.2A output is not continuous current, it varies according to the automatic current output of the USB connected load

5. Insurance duplication. If the battery is not connected correctly, the polarity will burn.

Requirements For Rechargeable Batteries:

● Available batteries: 3.7V-4.2V polymer lithium batteries such as 18650 batteries, mobile phone batteries, tablet batteries, MP3 batteries, etc., can be powered by a single section (piece) or multiple sections (pieces) in parallel (not supported in series, not in series). (Note: Parallel connection increases capacity, while series connection increases voltage and can only be used in parallel!)

● Can connect 2 to 6 18650 batteries in parallel!!!

● Unavailable batteries: dry batteries, batteries, 1.2V rechargeable batteries, nickel hydrogen batteries, 3.2V iron lithium polymer lithium batteries, etc.

The Following Points Should Be Noted During Product Installation:

1. The batteries need to be connected in parallel and the voltage needs to be between 3.2 and 4.2V to work. 18650 flat head and polymer batteries can be used;

2. The battery is positively connected to the motherboard B+negatively connected to the motherboard B -, and if installed in reverse, the motherboard must be burned;

3. New and old batteries, batteries with different models and brands, cannot be mixed.