Lithium rechargeable battery Voltcraft VC-26650 3.7V 5000mAh flat-top

Rechargeable lithium cylindrical cell Voltcraft VC-26650 provides a nominal voltage of 3.7V and a rated capacity of 5000mAh in a flat-top format. The flat positive terminal is designed for applications and battery holders that require a non-protruding contact surface. This cell is intended for use where high energy density and repeated recharge cycles are needed, delivering extended runtime for compatible devices when paired with an appropriate charger and protection circuitry.

Advantages

The cell combines high capacity with a compact cylindrical 26650 form factor, offering a balance between energy storage and size. The flat-top design improves compatibility with equipment and holders that do not accept button-top terminals. When used with a charger matched to lithium-ion chemistry and with proper battery management, the cell supports numerous charge/discharge cycles while maintaining stable voltage and discharge performance under moderate loads.

Suitable for

• High-capacity flashlights and portable lighting
• Power banks and portable chargers (in compatible packs)
• Handheld electronics and communication devices that accept 26650 cells
• DIY battery packs and hobbyist projects requiring cylindrical lithium cells

Key specifications

• Chemistry: Lithium-ion (rechargeable)
• Nominal voltage: 3.7 V
• Rated capacity: 5000 mAh
• Cell format: 26650 cylindrical
• Terminal type: flat-top (non-protruding positive terminal)
• Typical applications: high-energy portable devices, battery packs

How to use

Install the cell following the polarity markings of the device or holder, ensuring the flat positive terminal aligns with the intended contact. Charge the cell only with a charger designed for lithium-ion batteries that provides appropriate charge current and cutoff voltage. For safety and longevity, use protection circuits or battery management systems when assembling multiple cells into packs to prevent overcharge, overdischarge and cell imbalance. Store cells in a cool, dry place and avoid mechanical damage or shorting of terminals.

Usage recommendations

Use a charger with the correct charge profile for lithium-ion chemistry and select a charging current that does not exceed the cell’s recommended maximum. Avoid deep discharges below the manufacturer’s recommended cutoff voltage and keep cells away from extreme temperatures. When building battery packs, include cell balancing and protection to ensure safe operation.