Rechargeable 18650 Lithium Battery Murata - Sony VTC4 3.7V 2100mAh

Rechargeable 18650 Lithium Battery Murata - Sony VTC4 delivers a nominal voltage of 3.7V and a rated capacity of 2100mAh in the standard 18650 cylindrical format. This single-cell lithium-ion battery is intended for applications that require a compact, removable power source with stable voltage and predictable discharge characteristics. The cell is compatible with devices designed for 18650-size cells and can be used as a direct replacement or as part of a multi-cell battery pack when matched with cells of the same type and condition.

Advantages

The Murata - Sony VTC4 18650 offers a balance of capacity and discharge capability suitable for many portable electronics. Its established chemistry provides consistent performance across charge cycles while maintaining the form factor expected in flashlights, power banks, vape devices and DIY battery assemblies. The cell's standardized dimensions and nominal voltage simplify integration into existing holders and battery management systems that accept 18650 lithium-ion cells.

Suitable for

• High-drain flashlights and portable lighting
• Power banks and USB battery packs (single-cell or multi-cell configurations)
• Vape devices and personal vaporizers designed for 18650 cells
• DIY battery packs, controllers and hobby electronics
• Emergency backup power for small devices

Key specifications

• Chemistry: Lithium-ion (18650 cylindrical cell)
• Nominal voltage: 3.7 V
• Rated capacity: 2100 mAh
• Typical form factor: 18 mm diameter × 65 mm length (standard 18650 size)
• Rechargeable: yes

How to use

Install the cell in devices or holders designed for 18650 lithium-ion batteries, observing correct polarity. Charge the battery with a compatible charger that supports lithium-ion chemistry and adheres to recommended charging profiles (CC-CV). When assembling multi-cell packs, match cells by capacity, age and state of charge, and use an appropriate battery management system (BMS) or protection circuitry to ensure safe operation. Do not attempt to force the cell into non-compatible compartments or equipment designed for other cell sizes.

Usage recommendations

Store and charge the battery in a dry, ventilated area away from direct heat sources. Avoid exposing the cell to temperatures outside the manufacturer’s recommended range, and do not over-discharge or short-circuit the terminals. For prolonged storage, keep the battery at about 30–50% state of charge and inspect periodically. Use only chargers and protection circuits designed for lithium-ion cells and follow local regulations for disposal or recycling of spent batteries.