Vapcell K54 26650 5400mAh 15A Battery

8,99 €

Type: 26650
Capacity: 5400mAh
Dimensions: (Height) 65.1 mm (Diameter) 26.4 mm
Voltage: 3.6V
Maximum continuous discharge current: 15 A

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The Vapcell K54 is a 26650-format rechargeable battery with a high capacity of 5400mAh and a sustained discharge current of 15A. It is suitable for high-powered flashlights and devices that require a reliable and long-lasting power source.

Technical Specifications of the Vapcell K54 26650

Specifications	Value
Brand	Vapcell
Model	K54
Format	26650
Rated Capacity	5,400 mAh
Minimum capacity	5,250 mAh
Discharge Current (Continuous)	15A
Dimensions	26.4 x 65.1 mm
Weight	98 years (approximately)
Rated Voltage	3.7 V
Voltage at the end of charging	4.20 V
Voltage at the end of the discharge	2.5 V
Internal Resistance	19 mΩ (approximate, AC 1 kHz)
Normal charging	2000 mA, CCCV, 100 mA cutoff
Fast Charging	4,000 mA
Operating Temperature During Charging	0°C ~ 45°C
Operating temperature under rarefaction	-20°C to 75°C
Storage Temperature	-5°C to 35°C

A battery with or without protection?

Protected batteries contain a small electronic circuit board mounted in the anode or cathode. It protects the cell from overcharging, over-discharging, and excessive current.

Batteries with protection typically have a raised positive terminal and are slightly longer than standard batteries.
They are suitable for flashlights with mechanical reverse-insertion protection—such as those from Acebeam, Olight, Fenix, Nitecore, Armytek, and others.
They are not suitable for flashlights designed for a standard-size battery, such as those from Zebralight and Dulotec.COM.
Some devices require a higher current, which protected batteries cannot provide.

The easiest way to choose the right battery is to measure the original one in millimeters and compare it with the technical specifications. If needed, you can contact us for assistance.

Instructions for Use

Charge the battery using a high-quality lithium-ion charger before using it for the first time.
Do not use or store at high temperatures or in high humidity.
Do not throw into fire or water—risk of fire or explosion.
Do not crush, strike, or puncture the battery.
Do not disassemble the battery.
Keep out of reach of children.
The battery gets hot during use—handle with care after use.
If not used for more than 3 months, charge it before use.

Safety Rules

Do not modify, disassemble, cut, or short-circuit the device.
Do not expose to water, fire, or extreme temperatures.
Do not use in defective devices.
Do not recharge or force-discharge the battery.
Do not charge at sub-zero temperatures.
Do not use a battery with a damaged foil.
Store in a protective case—never in a pocket or bag without a protective cover.

Frequently Asked Questions

What is the difference between a protected and an unprotected 26650 battery?

The protected battery contains a built-in circuit board that cuts off the power in the event of overcharging, over-discharging, or excessive load. This makes it safer, but also slightly longer and wider than a standard battery. An unprotected battery lacks this circuit board and is more compact. It is suitable for devices where the manufacturer has provided its own protection. Before choosing a battery, it’s important to check whether the flashlight or device requires a protected or standard cell.

What devices is the Vapcell K54 26650 battery suitable for?

The Vapcell K54 26650 battery is suitable for high-power flashlights and devices that use the 26650 format. It offers a high capacity of 5400mAh and a sustained discharge current of 15A, making it suitable for devices with higher power consumption. Before use, it is important to check whether your device is designed for an unprotected battery and whether the dimensions of 26.4 x 65.1 mm are compatible with the battery compartment.

How do I properly charge a Vapcell K54 battery?

The battery must be charged using a high-quality charger designed for lithium-ion cells. Normal charging is at 2000 mA using CCCV mode, with a cut-off at 100 mA. Fast charging is permitted at 4000 mA. Charging is permitted only at temperatures between 0°C and 45°C. Do not charge at sub-zero temperatures, and do not use unsuitable chargers.

How do I properly store a 26650 battery?

The battery should be stored at a temperature between -5°C and 35°C, away from moisture and direct heat. Never place it in a pocket or bag without a protective case, as contact with metal objects can cause a short circuit. If the battery is not used for more than 3 months, it is recommended that you charge it before using it again. Do not store the battery if the protective film is damaged.

Is the Vapcell K54 battery safe under normal use?

The battery is safe when used and stored in accordance with the instructions. It is important not to expose it to fire, water, or extreme temperatures. Do not crush, puncture, disassemble, or use it in defective devices. Do not use the battery if the protective film is damaged. Store it in the protective case provided.

What is the difference between the rated capacity and the minimum capacity of the Vapcell K54?

The rated capacity of the Vapcell K54 is 5400mAh, which represents the typical value under standard discharge conditions. The minimum capacity of 5,250 mAh is the guaranteed lower limit that the battery must reach. This difference reflects manufacturing tolerance and ensures predictability when used in devices with precisely defined power requirements.

How can I tell which battery is right for my flashlight?

The most reliable way is to measure the original battery in millimeters and compare the dimensions with the technical specifications of the battery you’ve chosen. The Vapcell K54 measures 26.4 x 65.1 mm. Also check whether your flashlight requires a protected or unprotected battery. If in doubt, you can contact the Dulotec.COM team, who will help you choose the right option for your device.