Technical Specifications
Product Name:
Lithium Battery Shield 2×18650 Mobile Power Expansion Board Module - 5V/2.2 A & 3V/1 A
General Description:
This compact power module allows you to mount up to two 18650 lithium-ion batteries to power devices such as Arduino, ESP32, ESP8266, NodeMCU, and more, offering both 3V and 5V regulated output
Key Specifications:
| Feature | Details |
|---|---|
| Battery Input | Supports up to 2 × 18650 Li-ion batteries—observe correct polarity |
| Output Voltages | 3 V @ 1 A; 5 V @ 2.2 A (peak up to 3 A, not recommended for sustained use) |
| Charge Input | Micro-USB port; charging current ~600–800 mA |
| Conversion Efficiency | Approximately 95 % efficiency |
| Dimensions | ~100 mm × 50 mm × 20 mm |
| Protection Features | Built-in battery protection IC offering over-charge, over-discharge, and over-current protection |
Usage Notes:
- Ensure correct battery insertion - polarity is clearly marked; incorrect installation may damage the module
- While the module can momentarily support up to 3 A at 5 V, it's best to stay within the 2.2 A rating to preserve module longevity
NOTE: This board can't be used for Mobile phone charging (Mobile Power Bank).
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