Rechargeable lithium-ion battery XTAR 18650-4000 3.6V 4000mAh, 69.2 mm × 18 mm, 1 pc

Single rechargeable XTAR 18650-4000 lithium‑ion cell with nominal voltage 3.6 V and capacity 4000 mAh. The cell measures 69.2 mm in height and 18 mm in diameter and is intended for devices that accept 18650 batteries, such as flashlights, power banks and various electronic devices. Handle and store according to safety warnings to avoid exposure to battery contents.

Advantages

The battery offers high capacity for extended run time, a standard 18650 size compatible with many devices, and a rechargeable lithium‑ion chemistry for repeated use. Compact cylindrical form factor and nominal voltage suitable for common portable electronics.

Suitable for

• Flashlights and torches
• Portable power banks
• Rechargeable electronic devices that accept 18650 cells
• Battery packs and DIY electronics projects

Key specifications

• Capacity: 4000 mAh
• Nominal voltage: 3.6 V
• Chemistry: Lithium‑ion (rechargeable)
• Height: 69.2 mm
• Diameter: 18 mm
• Quantity: 1 cell

How to use

Insert the cell into devices designed for 18650 batteries following the device manufacturer’s polarity and installation instructions. Charge the battery only with a compatible charger designed for lithium‑ion cells and monitor charging until complete. Do not use damaged or swollen cells; replace if the battery shows signs of damage.

Usage recommendations

Avoid contact of battery contents with eyes and skin. In case of accidental contact, rinse thoroughly with water and seek medical attention. Store and transport cells in a cool, dry place away from direct heat sources and metal objects that could short the terminals.