Overview
The 3.7V 450mAh Lithium-Ion (Li-Ion) Battery provides a stable and long-lasting power solution for small-scale electronic projects. Designed for efficiency, this battery offers a higher cycle life compared to standard Li-Po batteries, meaning it can be recharged many more times before losing capacity. Its small footprint makes it a favorite for “hidden” electronics, such as smart jewelry, mini GPS trackers, and low-power microcontroller setups like the ESP32-C3 or Seeed Studio XIAO.
Key Features
Long Cycle Life: Designed for hundreds of charge/discharge cycles without significant capacity loss.
Low Self-Discharge: Retains its charge for longer periods when not in use compared to NiMH or NiCd alternatives.
Compact & Lightweight: Ideal for projects where every millimeter and gram counts.
Stable Voltage Output: Provides a consistent 3.7V (4.2V at full charge), perfect for powering sensitive sensors and ICs.
Technical Specifications
| Feature | Specification |
| Chemistry | Lithium-Ion (Li-Ion) |
| Nominal Voltage | 3.7V |
| Full Charge Voltage | 4.2V |
| Capacity | 450 mAh |
| Charge Current | 0.2C to 0.5C (Recommended) |
| Discharge Rate | 1C (Typical for Li-Ion) |
| Protection | Available with or without internal PCM (Check variant) |
| Dimensions | Approx. 30mm x 20mm x 6mm (Prismatic) |
Ideal Applications
Wearable Tech: Smartwatches, fitness trackers, and pulse monitors.
IoT Nodes: Remote sensors that transmit data over Bluetooth (BLE) or LoRa.
Mini Gadgets: Pocket LED flashlights, mini voice recorders, and wireless earbuds.
Medical Aids: Portable blood pressure monitors or handheld diagnostic tools.
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