The Vapcell K25 18650 Battery is a rechargeable 2500mAh lithium-ion cell with a 20A maximum continuous discharge rating. Featuring a flat-top design and 3.6V nominal voltage, it is suitable for compatible devices that require a removable 18650 battery.

Each Vapcell K25 battery is supplied individually in a protective battery tube. Always check your device's battery requirements and follow the manufacturer's safety instructions before use.

Vapcell K25 18650 Battery Features

• 2500mAh typical capacity: Rechargeable lithium-ion cell for compatible equipment.
• 20A continuous discharge rating: Check that this rating meets your device's current requirements.
• 18650 flat-top format: Designed for equipment that accepts this specific battery size and terminal type.
• 3.6V nominal voltage: With a manufacturer-specified maximum charging voltage of 4.2V.
• Protective storage tube: One battery supplied with a tube for storage and transport.

Vapcell K25 Battery Specifications

• Brand: Vapcell
• Model: K25
• Battery type: Rechargeable INR lithium-ion cell
• Battery size: 18650
• Terminal type: Flat top
• Protection circuit: Unprotected cell
• Typical capacity: 2500mAh (0.2C discharge)
• Minimum capacity: 2400mAh (0.2C discharge)
• Nominal voltage: 3.6V
• Maximum continuous discharge current: 20A
• Manufacturer-listed maximum discharge current: 35A (not a continuous rating)
• End-of-charge voltage: 4.2V
• End-of-discharge voltage: 2.5V
• Approximate dimensions: 18.3mm x 65.0mm
• Approximate weight: 46g
• Manufacturer-listed internal resistance: Approximately 15mΩ (AC 1kHz)

Specifications are based on Vapcell's published K25 data. Actual performance depends on the device, operating conditions and battery condition. The 35A figure must not be treated as a continuous discharge rating.

Vapcell K25 Compatibility

The Vapcell K25 is intended for equipment that specifically supports removable, flat-top 18650 lithium-ion batteries and whose electrical requirements are within the cell's operating limits. Not every vape kit accepts removable batteries, and not every 18650 device is suitable for this cell.

Before purchasing, check your device manual for the required battery size, terminal type, discharge rating and any other manufacturer requirements. This is a standalone battery, not a complete vape kit or charger.

For other options, browse our 18650 batteries or explore the Vapcell battery range.

Battery Charging, Handling and Storage

The Vapcell K25 is an unprotected lithium-ion cell and must be handled carefully. Incorrect charging, storage or use can cause overheating, fire or injury.

• Use only a charger suitable for unprotected 18650 lithium-ion cells and follow the charger and battery manufacturers' instructions.
• Never leave a battery charging unattended or overnight.
• Inspect the battery wrap, insulating ring and cell body before use. Do not use a damaged, dented, leaking or overheating cell.
• Never carry a loose battery in a pocket or bag, particularly alongside keys, coins or other metal objects.
• Keep the battery in its protective tube when not installed in a compatible device.
• Do not short-circuit, crush, puncture, dismantle or expose the battery to excessive heat or water.
• For devices using multiple cells, follow the device manufacturer's guidance on matched batteries and battery replacement.
• Do not use this cell in an unregulated or mechanical mod without the specialist knowledge required to assess battery current draw and operating limits.
• Keep batteries out of reach of children and dispose of damaged or end-of-life cells through an appropriate battery recycling service.

Read our Battery Safety guidance and Guide to Battery Safety for Removable Batteries before using or charging removable lithium-ion cells.

What's Included?

• 1 x Vapcell K25 2500mAh 18650 Battery
• 1 x Protective battery tube

Please note: A battery charger and vape device are not included.

Vapcell K25 Battery FAQs

What capacity is the Vapcell K25 battery?

The Vapcell K25 has a typical capacity of 2500mAh and a manufacturer-listed minimum capacity of 2400mAh when measured at a 0.2C discharge rate.

What is the continuous discharge rating of the Vapcell K25?

The Vapcell K25 has a maximum continuous discharge rating of 20A. Vapcell also lists a 35A maximum discharge figure, but this must not be confused with its continuous rating.

Will the Vapcell K25 work with my vape kit?

Only if your device supports removable flat-top 18650 lithium-ion batteries and its electrical requirements are within the K25's specifications. Check your device manual before purchasing.

Is the Vapcell K25 rechargeable?

Yes. The Vapcell K25 is a rechargeable lithium-ion battery. Use a compatible charger and follow the manufacturer's charging and safety instructions.

Does the Vapcell K25 come with a charger?

No. The product contains one Vapcell K25 18650 battery and a protective battery tube. A charger and vape device are not included.

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