1200mAh 18650 Rechargeable Li-ion Battery – Reliable 3.7V Power Cell

Overview

An 18650-format rechargeable lithium-ion cell rated at 1200mAh, 3.7V nominal — a common power source for portable electronics and battery-powered maker projects.

Key Specs

Features

• Standard 18650 size — fits most 18650 holders and chargers
• Rechargeable across hundreds of cycles, typical of Li-ion chemistry

Compatible With

Any 18650 battery holder and Li-ion charging module (e.g. TP4056)

Use Cases

• Powering portable Arduino/ESP32 projects
• Flashlights, battery packs, robotics

FAQ

Does it have built-in protection? Check the specific cell — “protected” 18650 cells include a small PCB against overcharge/discharge/short-circuit; unprotected cells need external protection circuitry.

How do I charge it? Use a dedicated Li-ion charger such as a TP4056 module — never use a generic charger not rated for Li-ion chemistry.