3.7V Turn 5V 2A Boost Module,Dual USB Charging Circuit Board PCB Board with Led Light for 18650 Lithium Battery Mobile Power Bank DIY (2 Pack)

Price: SAR164.00
(as of Apr 20, 2026 13:34:35 UTC – Details)


Material: Metal
color: Blue
Input port: MicroUSB (Android mouth)
Input requirements: 5V constant voltage power supply can be done to charge the input power supply
Output port: USB
Output parameters: 5V1A/5V2A
Requirements for rechargeable batteries:
Available battery: 18650 battery, cell phone battery, flat battery, MP3 battery, etc. 3.7V-4.2V polymer lithium battery, can be single section (chip) power supply, can also be multi-section (chip) parallel power supply (not apply tandem). (Note: increase the capacity in parallel, the series is to increase the voltage, can only be used in parallel!)
Not available Battery: dry batteries, batteries, 1.2V rechargeable batteries, nickel-metal hydride batteries, 3.2V lithium iron polymer lithium batteries.
Product installation should pay attention to the following points:
The battery should be in parallel, the voltage between 3.2-4.2V to work, 18650 flat and polymer batteries can be;
Battery positive connected board B, battery negative connected board B-. It cannot be reversed, once connected reversed, the main board will be burned. the old and new batteries, models, inconsistent battery brand can not be mixed.
Package Include:
2* Circuit Board
🌟Dual USB output.
🌟LED lights show the power, non-working state of intelligent automatic shutdown.
🌟Built-in lithium battery protection IC, over-current, overvoltage, undervoltage protection
🌟Can be parallel 2-6 18650 battery.
🌟Wide operating temperature range (-20 ° C – 50 ° C), with over temperature protection.