Vapcell 18650 N40 4000mAh 10A Battery

13,00 €

Type: 18650
Capacity: 4000mAh
Dimensions: (Height) 65 mm (Diameter) 18.3 mm
Voltage: 3.6V
Maximum continuous discharge current: 10A

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Vapcell 18650 N40 – High-Capacity Lithium-Ion Battery

The Vapcell N40 is a reliable 18650-format rechargeable battery cell with a rated capacity of 4000mAh and a continuous discharge current of 10A. It is suitable for flashlights, tactical equipment, and electronic devices with higher power consumption.

The battery offers a long cycle life—over 1,000 charge cycles at a 1C discharge rate, with 70% capacity retention. This makes it a cost-effective and practical solution for everyday use.

Key Features of the Vapcell N40 18650

Rated capacity: 4000mAh
Minimum capacity: 3800mAh
Rated voltage: 3.6V
Maximum continuous discharge current: 10 A
Maximum peak discharge current: up to 12.5 A (with thermal cut-off at 60°C)
Charging end voltage: 4.20V
Discharge-end voltage: 2.5V
Normal charging: 1500 mA
Fast charging: 2500 mA
Weight: 48 grams
Dimensions: height 65 mm, diameter 18.3 mm
Cycle life: over 1,000 cycles at a 1C discharge rate with 70% capacity retention

Operating Temperatures and Storage

Charging: 0°C to 45°C
Operating temperature range: -20°C to 75°C
Storage: -5°C to 35°C

Safety Instructions

Following the instructions for use extends battery life and prevents accidents.

Do not use in high temperatures or humid environments
Do not throw into fire or water—the battery may catch fire or explode
Do not crush, strike, or puncture the battery
Do not disassemble or short-circuit
Keep out of reach of children
The battery may be hot after use—handle with care
If the device has been stored for more than 3 months, charge the battery before use
Do not charge at sub-zero temperatures
Do not use the battery if the foil is damaged or compromised
Do not store the battery in a pocket or bag without a protective case
Do not use in defective devices

Specifications	Value
Brand	Vapcell
Model	N40
Type	INR 18650 lithium-ion rechargeable battery cell
Rated Capacity	4,000 mAh
Minimum capacity	3,800 mAh
Rated voltage	3.6V
Voltage at the end of charging	4.20 V
Voltage at the end of the discharge	2.5V
Maximum continuous discharge current	10A
Maximum instantaneous discharge current	12.5A (with thermal cut-off at 60°C)
Normal charging	1500 mA
Fast Charging	2,500 mA
Life Cycle	Over 1,000 cycles at a 1C discharge rate and 70% capacity
Weight	48 years
Elevation	65 mm
Diameter	18.3 mm
Filling Temperature	0°C to 45°C
Dilution Temperature	-20°C to 75°C
Storage Temperature	-5°C to 35°C

Frequently Asked Questions

What is the difference between the rated capacity and the minimum capacity of the Vapcell N40?

The rated capacity of the Vapcell N40 is 4000mAh—this is the value the manufacturer uses to describe the battery. The minimum capacity is 3,800 mAh and represents the guaranteed lower limit that the battery provides under standard testing conditions. In practice, most cells will show values between these two figures.

How many times can a Vapcell 18650 N40 battery be recharged?

According to the manufacturer's data, the battery lasts for over 1,000 charge cycles at a 1C discharge rate, after which it retains at least 70% of its original capacity. This is a good indicator of durability under regular use. To achieve the maximum number of cycles, it is important to follow the recommended charging and storage conditions.

At what temperature should the battery be charged?

The Vapcell N40 should be charged at temperatures between 0°C and 45°C. Charging at sub-zero temperatures is prohibited, as it may damage the battery or lead to dangerous situations. It is recommended to store the battery at temperatures between -5°C and 35°C.

What is the difference between normal and fast charging for the Vapcell N40?

This battery is normally charged at a current of 1500 mA, while fast charging uses 2500 mA. Fast charging reduces the time required for a full charge cycle, but requires a charger that supports this current. It is recommended to use a high-quality charger compatible with the 18650 format.

Is it safe to carry the battery in a pocket or bag?

No—the manufacturer expressly prohibits storing the battery in a pocket or bag without a protective case. Contact between the metal terminals and coins, keys, or other metal objects can cause a short circuit. Always use a specialized plastic case to store battery cells.

What does a peak discharge current of 12.5 A with a thermal cut-off mean?

The maximum instantaneous discharge current of 12.5A is the value the battery can provide for a short period of time—for example, during a device’s peak load. The thermal cut-off at 60°C is a protective mechanism that limits discharge in the event of overheating. The continuous discharge current at which the battery can operate for an extended period is 10 A.

What should we do if the battery hasn't been used for more than 3 months?

For extended storage of more than 3 months, the manufacturer recommends charging the battery before use. Lithium-ion cells lose a small amount of their charge when left unused. Charging before use ensures proper activation and prevents deep discharge, which can permanently reduce capacity.