The Ultrafire 18650 3.7V Li-ion rechargeable battery is a compact and high-performance power source designed for a wide range of electronics and robotics projects. With a capacity of approximately 1200mAh, it is suitable for powering Arduino, ESP32, Raspberry Pi, motor drivers, flashlights, and wireless devices.
This rechargeable battery offers stable voltage output and a high discharge rate, making it perfect for projects that require continuous and reliable power. It is lightweight and can be easily recharged using a compatible 3.7V Li-ion battery charger.
Whether you are building a portable power supply, DIY robot, or IoT system, this battery provides the efficiency and versatility needed for modern electronics.
⭐ Key Features:
-
🔋 3.7V nominal voltage – ideal for electronics & embedded projects
-
🔄 Rechargeable Li-ion chemistry
-
💪 Long cycle life and stable output
-
🧰 Compact and lightweight – easy to integrate
-
🔧 Suitable for Arduino, ESP32, 18650 flashlights, DIY robots, Bluetooth speakers
-
⚡ Can be recharged using standard 18650 chargers
-
✅ Reliable and safe for low to medium drain devices
⚙️ Technical Specifications:
| Parameter | Specification |
|---|---|
| Battery Type | Rechargeable Li-ion |
| Model | 18650 (Ultrafire) |
| Nominal Voltage | 3.7V |
| Typical Capacity | ~1200mAh (actual may vary) |
| Rechargeable | Yes |
| Dimensions | Approx. 65mm x 18mm |
| Polarity | Flat or button top (varies) |
| Weight | ~45g |
| Applications | Flashlights, Arduino, IoT, robotics, toys |
Reviews
There are no reviews yet.