Description

Power your high-performance flashlights with the Wurkkos 21700 5000mAh button top rechargeable lithium-ion battery – a premium pointed (button-top) cell sold as 1 battery per pack for perfect single replacements or spares. This battery offers a standard capacity of 5000mAh at 3.6V, delivering long-lasting, stable power output ideal for demanding LED torches and compatible devices.

The button-top design provides secure, reliable contact in flashlights that require pointed-top 21700 cells, ensuring optimal performance and easy drop-in compatibility. Equipped with advanced safety features including a microporous barrier and nickel-plated stainless steel protectors, it gives you added confidence during charging and use. As a rechargeable 3C cell, it combines durability, longevity, and eco-friendly benefits over disposable options.

Key specifications:

• Battery type: 21700
• Capacity: 5000mAh (standard)
• Voltage: 3.6V
• Minimum voltage: 2.50V
• Maximum voltage: 4.20V ± 0.03V
• Diameter: 21.7 mm ± 0.2 mm
• Length: 70.9 mm ± 0.2 mm
• Weight: 72 g ± 4 g
• Standard charge current: 0.2C (1000mA)
• Maximum charge current: 0.7C (3500mA)
• Maximum discharge current: 2C (10000mA / 10A continuous; can handle up to 15A max)
• Initial internal impedance: ≤ 30mΩ

This high-capacity 21700 battery excels in applications needing extended runtime and moderate to higher current draw, such as tactical lights, outdoor exploration, or everyday carry setups. Its safety-focused construction and rechargeable nature make it a smart, sustainable choice for consistent illumination.

Important safety and usage notes: Charge only with a compatible lithium-ion charger using CC-CV method (to 4.20V ± 0.03V) and respect the listed currents. Do not exceed discharge limits, short-circuit, puncture, crush, over-discharge below 2.50V, or expose to water, fire, or extreme conditions. Use in devices with proper protection circuits (recommended for higher-discharge scenarios). Store partially charged in a cool, dry place.

Note: This listing is for 1 battery per pack – convenient for singles, spares, or custom builds.

Get reliable, high-capacity power with the Wurkkos 21700 5000mAh button top – advanced safety, long runtime, and trusted performance in every single battery!