Vapcell Dulotec 21700 5000mAh 10A Battery – E2150C with Protection and USB-C Charging

11,99 €

Type: 21700
Capacity: 5000mAh
Dimensions: (Height) 77 mm (Diameter) 21.6 mm
Voltage: 3.6V
Maximum continuous discharge current: 10A
USB-C fast charging and discharging (power bank)

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21700 Rechargeable Battery with USB-C Charging and Protection

The Vapcell E2150C is a high-quality 21700-format lithium-ion rechargeable battery with a rated capacity of 5000 mAh and a maximum continuous discharge current of 10 A. It charges directly via a built-in USB Type-C port—all you need is a standard USB-C cable.

The battery has built-in protection that safeguards it against overcharging, over-discharging, and excessive current. It can also be used as a power bank to charge other devices.

Key Benefits

High capacity—5,000 mAh rated, minimum 4,900 mAh
Built-in USB-C port for direct charging
Power bank function for charging external devices
Built-in protection against overcharging, over-discharging, and overcurrent
Fast charging at 2500 mA
Weighs only 74.4 g

A battery with or without protection?

Batteries with built-in protection contain a small circuit board located in the anode or cathode. It shuts down the battery under dangerous conditions—overcharging, over-discharging, or excessive current. These batteries are suitable for flashlights with mechanical reverse-polarity protection, such as those offered by brands like Acebeam, Olight, Fenix, Nitecore, and Armytec.

Protected batteries are slightly longer and wider than standard ones. They are not suitable for all flashlights—for example, models like Zebralight, which are designed for unprotected batteries. Before purchasing, check the dimensions of the original battery in millimeters and compare them with the technical specifications. If necessary, contact Dulotec.COM for advice.

Instructions for Use

Charge the battery before using it for the first time using a high-quality lithium-ion battery charger.
Do not use or store in high temperatures or humid environments.
Charging temperature: 0°C to 45°C; discharging temperature: -20°C to 75°C; storage temperature: -5°C to 35°C.
Do not throw into fire or water—risk of fire or explosion.
Do not crush, strike, or disassemble the battery.
Keep out of reach of children.
If the battery has not been used for more than 3 months, charge it before use.
The battery gets hot during use—handle with care after use.

Safety Rules

Do not modify, puncture, cut, or short-circuit the device.
Do not expose to water, fire, or extreme temperatures.
Do not use in damaged devices.
Do not overcharge or undercharge the battery; do not charge it at sub-zero temperatures.
Do not use the battery if the foil is damaged.
Store in a protective case—not in a pocket or bag without protection.

Specifications	Value
Brand	Vapcell
Model	E2150C
Format	21,700 INR
Rated Capacity	5,000 mAh
Minimum capacity	4,900 mAh
Rated voltage	3.6 V
Voltage at the end of charging	4.20 V
Voltage at the end of the discharge	2.5 V
Maximum continuous discharge current	10 A
Normal charging	2000 mA
Fast Charging	2,500 mA
Charging Method	USB Type-C (built-in port)
Elevation	77 mm
Diameter	21.6 mm
Weight	74.4 g
Defense	Yes
Origin	China

Frequently Asked Questions

What is the difference between a battery with protection and one without?

Batteries with built-in protection have a small electronic circuit board embedded in the anode or cathode. This circuit board protects the cell from overcharging, over-discharging, and excessive current, automatically breaking the circuit in the event of a dangerous situation. Batteries without protection do not have this circuit board and are slightly smaller in size. They are suitable for devices designed to work with standard-size batteries or those requiring a higher current. It is important to check the instructions for your flashlight or device to determine which type is appropriate.

Can the Vapcell E2150C be used as a power bank?

Yes. The battery has a built-in USB Type-C port that allows you to charge not only the battery itself but also external devices. All you need is a standard USB-C cable. This makes it convenient for travel or outdoor use when you don’t have access to a standard outlet.

Which flashlights is this battery suitable for?

The Vapcell E2150C battery is suitable for flashlights designed for the 21700 format and compatible with batteries that have built-in protection. This includes many models from Acebeam, Olight, Fenix, Nitecore, and Armytec, which feature mechanical reverse-polarity protection. It is not suitable for flashlights that require unprotected batteries, such as certain Zebralight models. We recommend checking the dimensions and requirements of your specific flashlight before purchasing.

At what temperature can the battery be charged and stored?

The battery can be charged at temperatures between 0°C and 45°C. Discharging is permitted within a range of -20°C to 75°C. A storage temperature between -5°C and 35°C is recommended. Charging at sub-zero temperatures is not recommended, as this may damage the cell. When stored properly, the battery retains its performance characteristics for a longer period of time.

What should I do if the battery hasn't been used for a long time?

If the battery has not been used for more than 3 months, it is recommended that you charge it before use. Lithium-ion batteries lose their charge during prolonged storage. Charging before use ensures full capacity and reduces the risk of deep discharge, which can cause irreversible damage to the cell.

How can I tell if this battery is right for my flashlight?

The easiest way is to measure the dimensions of the flashlight’s original battery in millimeters and compare them to the specifications of the Vapcell E2150C: 21.6 mm in diameter and 77 mm in height. Also check whether the flashlight requires a battery with or without protection. If in doubt, you can contact the Dulotec.COM team, who will help you choose the right battery for your specific device.

What are the rules for the safe storage of lithium-ion batteries?

Lithium-ion batteries must be stored in a special protective case, out of reach of children. Do not place them in a pocket or bag without protection. Avoid contact with water, fire, and extreme temperatures. Do not use batteries with damaged foil. Do not short-circuit or disassemble them. If stored improperly, the battery may catch fire or cause harm.

Weight

0,05 kg

Dimensions

2,1000 cm