Vapcell 18650 F38 3800mAh 10A Battery

13,00 €

Type: 18650
Capacity: 3800mAh
Dimensions: (Height) 65 mm (Diameter) 18.3 mm
Voltage: 3.6V
Maximum continuous discharge current: 10A

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Vapcell 18650 F38 Rechargeable Battery – 3800mAh with 10A Continuous Current

The Vapcell F38 is a high-quality INR 18650 lithium-ion rechargeable battery cell with a rated capacity of 3800mAh. This model features a flat positive terminal and is suitable for devices requiring a high and stable discharge current.

The minimum capacity is 3,650 mAh, and the maximum continuous discharge current reaches 10 A. When a higher surge current is required, the battery can handle up to 12.5 A of peak current.

Battery type: INR 18650
Model: F38 with Flat Plus
Rated capacity: 3800mAh
Minimum capacity: 3650mAh
Rated voltage: 3.6V
Voltage at full charge: 4.20V
Voltage at full discharge: 2.5V
Maximum continuous discharge current: 10 A
Maximum instantaneous discharge current: 12.5 A
Normal charging: 1500 mA
Fast charging: 2500 mA
Weight: 48 g
Dimensions: height 65 mm, diameter 18.3 mm

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

Protected batteries contain a small circuit board that protects against overcharging, over-discharging, and excessive current. They are slightly longer and wider than standard batteries, so they are not suitable for all flashlights.

Unprotected batteries, such as this Vapcell F38, are suitable for flashlights designed for a standard size and a higher discharge current. Before purchasing, check the dimensions of the original battery in millimeters and compare them with the technical specifications of the new one.

Instructions for Use

Charge the battery using a high-quality lithium-ion battery charger before using it for the first time.
Do not use in high temperatures or humid environments.
Operating temperature during charging: 0°C to 45°C; during discharging: -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.
The battery may be hot after use—handle with care.
If stored for more than 3 months without use, recharge before the next 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 over-discharge the battery.
Do not charge at sub-zero temperatures.
Do not use if the foil is damaged or compromised.
Store in a protective case—not in a pocket or purse.

Specifications	Value
Brand	Vapcell
Model	F38
Type	18,650 INR
Rated Capacity	3,800 mAh
Minimum capacity	3,650 mAh
Rated voltage	3.6V
Voltage at full charge	4.20 V
Voltage at full discharge	2.5V
Maximum continuous discharge current	10A
Maximum instantaneous discharge current	12.5A
Normal charging	1500 mA
Fast Charging	2,500 mA
Weight	48 years
Elevation	65 mm
Diameter	18.3 mm
Type Plus	Flat

Frequently Asked Questions

What is the difference between a battery with a flat positive terminal and one with a raised positive terminal?

Batteries with a flat positive terminal, such as the Vapcell F38, have a shorter overall length and are suitable for flashlights and devices designed for the standard 18650 size. Batteries with a protruding positive terminal are slightly longer and wider because they contain an additional protection circuit. Before purchasing, check which type your device requires.

Is this battery compatible with Dulotec flashlights?

Dulotec flashlights are designed for unprotected, standard-size 18650 batteries. The Vapcell F38 with a flat positive terminal is exactly this type of battery. We recommend measuring the dimensions of your original battery and comparing them to the specifications provided—height 65 mm and diameter 18.3 mm.

What is the maximum current during discharge?

The Vapcell F38 supports a maximum continuous discharge current of 10A. During short bursts, the battery can handle up to 12.5A. These ratings make it suitable for devices with higher current consumption.

At what temperatures can the battery be charged and stored?

Charging is permitted at temperatures between 0°C and 45°C. Discharging is possible in the range from -20°C to 75°C. A storage temperature between -5°C and 35°C is recommended. Do not charge the battery at sub-zero temperatures.

How do I store the battery safely?

The battery should be stored in a protective case, away from children, fire, water, and extreme temperatures. Do not place it in a pocket or bag without protective packaging, as contact with metal objects may cause a short circuit. If stored for more than 3 months without use, charge it before using it again.

What kind of charger should I use to charge the Vapcell F38?

Use a high-quality charger designed for lithium-ion batteries. Normal charging is at 1500mA, and fast charging is at 2500mA. Do not overcharge the battery beyond 4.20 V, and do not leave it unattended in a low-quality charger.

What should I do if the battery wrap is damaged?

Do not use a battery with a damaged or compromised foil. A damaged coating can lead to dangerous situations such as a short circuit, overheating, or, in extreme cases, a fire. If you suspect damage, contact us for advice or a replacement.