Vapcell F34 18650 3400mAh 10A/20A Battery with a Protruding Positive Terminal

The Vapcell F34 is a protected, high-discharge INR 18650 lithium-ion rechargeable battery with a rated capacity of 3,400 mAh. It offers performance comparable to the Sanyo GA and LG MJ1, and outperforms the LG HG1.

The battery has a protruding positive terminal, making it compatible with flashlights that use two or more cells. It is suitable for devices with mechanical reverse-polarity protection.

• Type: INR 18650, Model F34
• Rated capacity: 3,400 mAh
• Minimum capacity: 3,300 mAh
• Rated voltage: 3.6 V
• Maximum discharge current: 20 A
• Maximum continuous discharge current: 10 A
• Charging end voltage: 4.20 V
• Discharge-end voltage: 2.5 V
• Normal charging: 1000 mA
• Fast charging: 2000 mA
• Weight: 48 g
• Dimensions: height 65.1 mm, diameter 18.4 mm
• Made in China

A battery with or without protection?

Batteries with built-in protection contain a small electronic circuit board in the anode or cathode. It protects the cell from overcharging, excessive discharge, and excessively high current—simply breaking the circuit when necessary.

Protected batteries are slightly longer and wider than standard ones. This means they do not fit in all flashlights. Flashlights such as Zebralight and Dulotec, for example, are designed specifically for unprotected batteries. Models from brands such as Acebeam, Olight, Fenix, Nitecore, and Armytec typically feature mechanical reverse-polarity protection and accept batteries with a protruding positive terminal.

To make the right choice, measure the size of the original battery in mm and compare it to the technical specifications of the new one. If you have any questions, please contact us—we’ll help you find the right battery for your device.

Operating Instructions

• 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.
• 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 become hot during use—handle with care after use.
• 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 charge at sub-zero temperatures.
• Do not overcharge or undercharge.
• Do not use if the protective film is damaged.
• Store in a protective case—not in a pocket or bag without a protective cover.

Frequently Asked Questions