Power Bank Module 3.7V Li-ion Micro-USB 5V 1A Charge & Boost
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Prices updated: 13 Oct 2026
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About this product
A power bank PCB module that charges a single 3.7 V Li-ion cell from a 5 V Micro-USB input and provides a 5 V USB output of up to 1 A. Red, green and blue LEDs show charging, full charge and load status. It suits portable projects that need a small battery-powered USB supply.
Specifications
- Charging input
- 5V 1A (Micro-USB)
- Step-up output
- 5V 1A max
- Battery type
- 3.7V Li-ion, charges to 4.2V
- Transient current
- 180uA
- Indicators
- Red: charging, Green: charged, Blue: load on USB
- Size
- 50 x 20 x 9 mm
Frequently asked questions
Can I use an unprotected Li-ion cell with it?
The listing states that unprotected cells are acceptable. Still handle the cell carefully and make sure its voltage and capacity suit the module.
How do I charge the battery through this module?
Connect a 5 V Micro-USB source to the charging input. The red LED shows charging and the green LED shows that charging is complete.
