Dual Micro-USB 3.7v to 5V 2A Mobile Power Bank DIY


10 in stock

$ 2.50

10 in stock

Share this product


Product Parameters:

  • LED lights show the power, non-working state of intelligent automatic shutdown;
  • Built-in lithium battery protection IC, over-current, overvoltage, undervoltage protection;
  • Dual USB output.
  • Product basic parameters:
  • Input port: MicroUSB (Andrews mouth)


  • color:blue
  • Input requirements: 5V constant voltage power supply can be done to charge the input power supply
  • Output port: USB
  • Output parameters: 5V2A

Requirements for rechargeable batteries:
Available battery: 18650 battery, cell phone battery, flat battery, MP3 battery, etc. 3.7V polymer lithium battery can be single section (chip) power supply, can also be multi-section (chip) parallel power supply (not in series, not in series ). (Note: increase the capacity in parallel, the series is to increase the voltage, can only be used in parallel!)
Can be parallel 2-6 18650 battery.
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;
the battery is connected to the motherboard B + negative access B-, installed anti-burning motherboard;
the old and new batteries, models, inconsistent battery brand can not be mixed.

Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.

Package Included:

1PCS Circuit Board


There are no reviews yet.

Be the first to review “Dual Micro-USB 3.7v to 5V 2A Mobile Power Bank DIY”

Your email address will not be published. Required fields are marked *