14500 3.7V 500mAh Lithium-Ion Rechargeable Battery (AA Size) for DIY Electronics and Flashlights

Product Description The 14500 Lithium-Ion battery is a high-performance cell that shares the same physical dimensions as a standard AA battery but operates at a significantly higher voltage of 3.7V (4.2V when fully charged). With a 500mAh capacity, this cell is engineered for high-drain applications such as powerful LED flashlights, compact robotic actuators, and wireless communication modules. Its lithium chemistry provides a superior power-to-weight ratio compared to Ni-MH batteries, making it the preferred choice for hobbyists looking to minimize the footprint of their portable projects.

Key Features

• Standard AA Dimensions: Fits into most AA-sized battery holders (note voltage compatibility).

• High Energy Density: Delivers nearly three times the voltage of a standard 1.2V/1.5V AA battery.

• Stable 3.7V Rail: Maintains a consistent discharge curve, perfect for 3.3V microcontrollers and sensors.

• Rechargeable Efficiency: Capable of hundreds of charge cycles with minimal capacity loss.

• Lightweight Design: Ideal for weight-sensitive applications like small drones or wearable tech.

Technical Details

• Dimensions: 50 mm (Height) x 14 mm (Diameter)

• Standard Charge Current: 250mA (0.5C)

• Max Discharge Current: 500mA to 1000mA (1C–2C)

• Operating Temperature: -10°C to +60°C

• Self-Discharge Rate: < 1% per month

• Weight: Approx. 18g to 20g