This 5V Power Bank Charging Module does two jobs on one small board — it charges an 18650 lithium battery through a Micro USB input port, and it boosts that battery’s 3.7V output up to a stable 5V DC for the USB output port. The charging side accepts 5V DC at 1mA input, which is standard USB power from any phone charger or computer port. The output side delivers 1200mA at 5V — enough current to run an Arduino, charge a phone slowly, or power a small IoT device from the 18650 battery.
The power bank module works with 18650 cells rated at 3.7V. A 12000mAh cell gives significant runtime for portable builds. The 5v step up power bank module circuit handles the voltage conversion internally — no external boost converter needed. The charging stops automatically when the battery reaches full charge, protecting the cell from overcharge. the 1mA charging input is slow by modern standards.
Charging a large 18650 cell from flat takes considerable time compared to fast charging power bank module circuits rated at 1A or above. The 5v power bank for arduino projects makes with module a practical choice for portable sensor nodes and battery-backed microcontroller builds. Available from StemVolt, this is suitable for makers and developers.
Related Product:
- Checkout USB Power Bank Case
Features:
- Micro USB input accepts 5V from any standard phone charger port
- 1200mA USB output powers Arduino boards and small IoT devices reliably
- Automatic overcharge protection stops charging when 18650 battery reaches full capacity
- 5V step-up circuit boosts 3.7V battery output to stable 5V USB
Technical Specifications:
| Specification | Details |
|---|---|
| Charging Voltage | 5V DC |
| Charging Current | 1A (1000mA) |
| USB Output Voltage | 5V DC |
| USB Output Current | 1200mA |
| Charging Interface | Micro USB Port |
| Compatible Battery | 18650 Li-ion Battery |
Applications:
- Portable Arduino sensor node running on Power Bank Charging Module and 18650 battery
- DIY power bank enclosure build using 5v power bank for arduino projects
- Battery-backed IoT device with power bank module for field data logging builds
- Fast charging power bank module base for custom high-capacity portable charger projects
Package Includes:
-
1 × 5V Power Bank Charging Module














Rahul Shringi –
Fast shipping service
Nitesh Wade –
5V Power bank charging module worked efficiently, providing stable output and fast charging performance.
Piyush Mantri –
Worth every rupee spent
Mayank Shinde –
Exactly as described
Ashish Jogi –
Perfect condition on arrival, no hidden charges, and excellent support for DIY electronics projects.