Vapcell 21700 Battery, 5000 mAh, 12A

8,99 €

Type: 21700
Capacity: 5000mAh
Dimensions: (Height) 70 mm (Diameter) 21 mm
Voltage: 3.6V
Maximum continuous discharge current: 12A

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Vapcell 21700 Rechargeable Battery, 5000mAh, 12A

The Vapcell 21700 is a high-capacity 21700-format rechargeable battery with a rated capacity of 5000mAh and a continuous discharge current of 12A. It is suitable for flashlights and devices that require a reliable and long-lasting power source.

Technical Specifications

Specifications	Value
Brand	Vapcell
Format	21700
Rated Capacity	5,000 mAh
Minimum capacity	4,900 mAh
Discharge Current (Continuous)	12A
Rated Voltage	3.6 V
Voltage at the end of charging	4.20 V
Voltage at the end of the discharge	2.5 V
Internal Resistance	16 mΩ (AC 1 kHz)
Normal charging	1500 mA, CCCV, 100 mA cutoff
Fast Charging	3,000 mA
Dimensions	21.0 x 70.0 mm
Weight	75 g (approximately)

A battery with or without protection—what's the difference?

Protected batteries have a small built-in circuit board that protects the cell from overcharging, over-discharging, and excessive current. When a critical threshold is reached, the protection system automatically shuts down the device.

Batteries with protection often have a raised positive terminal and are suitable for flashlights with mechanical reverse-polarity protection.
Suitable for brands such as Acebeam, Olight, Fenix, Nitecore, and Armytec.
They are not suitable for flashlights such as Zebralight and Dulotec, which are designed for unprotected batteries.
The protected batteries are slightly longer and wider than standard ones because of the added components.
Some flashlights require a higher current, which protected batteries cannot provide.

The easiest way to choose the right battery is to measure the size of the original one and compare it with the technical specifications. If you need assistance, please contact the Dulotec.COM team.

Safety Rules for Use and Storage

Important: If used improperly, the battery may catch fire or be damaged. Follow these guidelines:

Do not alter, modify, disassemble, drill, cut, crush, or short-circuit the device.
Do not expose the battery to water, fire, or high temperatures.
Do not use it in defective devices.
Do not throw it into a fire.
Do not overcharge or undercharge the battery. Do not charge the battery at sub-zero temperatures.
Do not use the battery if the foil is damaged.
Do not store in a pocket or purse—use a protective case.

Frequently Asked Questions

What is the difference between a 21700 battery and an 18650 battery?

The 21700 format is larger than the standard 18650. The Vapcell 21700 measures 21.0 x 70.0 mm, while the 18650 has a diameter of 18 mm and a length of 65 mm. The larger size allows for a higher capacity—in this case, 5000mAh—and a higher discharge current of 12A. Before purchasing, check to see if your device supports the 21700 format.

Is the Vapcell 21700 5000mAh battery protected?

This battery does not have a built-in protection circuit. Batteries with such a circuit are slightly longer and wider, and the circuit itself limits the maximum current. The Vapcell 21700 5000mAh offers a sustained discharge current of 12A without any additional limitations from a protection circuit. Check whether your flashlight or device requires a protected or unprotected cell.

What kind of charger is used to charge a Vapcell 21700 battery?

The battery can be charged with any charger compatible with the 21700 format and 4.20V lithium-ion cells. The normal charging current is 1500mA in CCCV mode, with a cut-off at 100mA. It also supports fast charging with a current of up to 3000mA. Do not charge at sub-zero temperatures, and do not overcharge.

Is this battery compatible with Olight, Fenix, or Nitecore flashlights?

Since the Vapcell 21700 5000mAh is unprotected, it is suitable for flashlights designed for the standard 21700 size and unprotected cells. Olight, Fenix, and Nitecore flashlights sometimes require a protected battery with a protruding positive terminal. We recommend checking the specifications for your specific flashlight model or contacting the Dulotec.COM team for assistance.

How much does a Vapcell 21700 5000mAh battery weigh?

The battery weighs approximately 75 grams. Its dimensions are 21.0 mm in diameter and 70.0 mm in length. These specifications are important when determining compatibility with a specific device or flashlight.

How do I properly store a Vapcell 21700 battery?

The battery should be stored in a protective case, away from moisture, fire, and direct sunlight. Do not place it in a pocket or bag without protective packaging—metal objects can cause a short circuit. Do not expose it to extreme temperatures, and do not store it completely discharged for an extended period.

What does an internal resistance of 16 mΩ mean for this battery?

Internal resistance is measured at 1 kHz AC and is an indicator of the cell’s quality. A value of 16 mΩ indicates low discharge losses and less heat generation when operating at higher currents. This is an important characteristic when using the battery in high-power flashlights or devices that require high current.