14500 Flat Top 3.7V 800mA Li-ion Rechargeable Battery (Good Quality)
Price in Sri Lanka

This 14500 lithium-ion cell provides an 800mAh capacity in a form factor identical in size to a standard AA battery. Operating at 3.7V, it offers a much higher voltage than traditional 1.5V AA cells, making it a specialized power solution for compact electronics. The flat-top terminal design is ideal for projects using battery holders with spring-loaded contacts or for creating small custom battery packs.

Specifications

• Battery Type: 14500
• Battery Capacity: 800mAh
• Battery Chemistry: Li-ion (Lithium-ion)
• Battery Voltage: 3.7V (Nominal) / 4.2V (Fully Charged)
• Battery Terminal Type: Flat Top
• Brand: Unbranded (Good Quality)
• Product Dimensions: 14mm x 50mm (Diameter x Height)

Features

• Standard Power Output: Provides a stable 3.7V supply for specialized small-scale electronics and microcontrollers.
• AA Size Form Factor: Matches the dimensions of a standard AA battery (14x50mm), allowing it to fit into many existing battery slots.
• Rechargeable Design: Can be charged and used multiple times, providing a cost-effective alternative to single-use primary batteries.
• Project Friendly: The flat-top surface is suitable for both contact-based holders and DIY pack building with spot-welding.

Common Applications

• Specialized LED penlights and small tactical flashlights
• Small-scale robotics and DIY hobbyist gadgets
• Wireless sensor nodes and IoT devices (ESP32/Arduino)
• Portable electronic toys and laser pointers

Usage Recommendation

Note: These cells are recommended exclusively for hobbyist and experimental applications. Because they produce 3.7V, do not use them in devices designed for standard 1.5V AA batteries as the higher voltage may damage the device. For professional industrial use, consider buying certified Tier-1 cells.