Rechargeable Li-Ion battery XTAR BAT0669 18650 3.6V 3600mAh, Ø 18.5×68.8 mm

Rechargeable XTAR BAT0669 is a cylindrical 18650 lithium-ion battery with a nominal voltage of 3.6 V and a rated capacity of 3600 mAh. The cell measures 18.5 mm in diameter and 68.8 mm in height and is supplied as a single rechargeable battery suitable for devices that accept 18650 cells.

Advantages

The battery offers a high capacity in a standard 18650 format, compatible with many flashlights and portable electronic devices. Its rechargeable lithium-ion chemistry provides a balance of energy density and cycle life while maintaining a compact cylindrical size for easy replacement and storage.

Suitable for

• Flashlights and torches that accept 18650 cells
• Portable electronics and power banks designed for 18650 batteries
• Rechargeable device packs and custom battery assemblies using 18650 cells

Key specifications

• Cell format: 18650 (cylindrical)
• Nominal voltage: 3.6 V
• Capacity: 3600 mAh
• Chemistry: Lithium‑Ion (Li‑Ion)
• Diameter: 18.5 mm
• Height: 68.8 mm
• Quantity supplied: 1 piece

How to use

Install the battery into devices that accept 18650 cells following the device manufacturer’s polarity markings. Charge the battery with a charger compatible with Li‑Ion 18650 cells and the stated nominal voltage. Use only chargers with proper charging algorithms for lithium‑ion chemistry and observe the charger’s instructions.

Recommendations

Do not expose the rechargeable battery to direct heat. Store and use the battery within the temperature ranges specified by your device and charger. Avoid short circuits, mechanical damage, and prolonged storage at full charge; follow standard lithium‑ion battery safety practices.