Description

The Fenix ARB-L18-4000U is a high-capacity 18650 lithium-ion rechargeable battery, delivering 4000mAh of power to provide extended runtimes for your high-drain devices. With its integrated USB-C charging port, this battery allows for direct charging without the need for an external charger, ensuring maximum convenience and efficiency.

Engineered with advanced safety features, it includes overcharge, over-discharge, overcurrent, and short-circuit protection, along with pressure relief vents to prevent overheating or potential hazards. The button-top design enhances its versatility, making it compatible with a wide range of Fenix flashlights and other high-output devices.

Features:

High Capacity: Provides 4000mAh of reliable power for extended use.
USB-C Rechargeable: Built-in USB-C charging port eliminates the need for an external charger.
Advanced Safety Features:
- Overcharge and over-discharge protection
- Overcurrent and short-circuit protection
- Triple overheating protection
- Pressure relief vents to prevent battery swelling or explosion
Durable Design: Constructed with a steel shell to reduce the risk of short-circuiting from impact.
Long Lifespan: Supports up to 500 charge cycles while retaining up to 75% of its original capacity.
Environmentally Friendly: Free from mercury and lead, ensuring safe and eco-friendly usage.

Specifications:

Specification	Details
Capacity	4000mAh
Voltage	3.6V
Charging Current	- Via charger: 800mA recommended, 4A max
	- Via USB-C: 1.5A max
Max Output Current	7A
Dimensions	- Length: 72mm
	- Diameter: 18.75mm
Weight	55g
Compatibility	Designed for high-intensity flashlights; may not fit older Fenix models due to extended length. Ensure battery tube depth is at least 72.5mm for compatibility.
Warranty Period	12 months from the date of purchase

Fenix High-Capacity USB Rechargeable 18650 Battery 4000mAh | ARB-L18-4000U

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SKU: 6942870311142

41,500 IQD

Shipped today? Order within: Jul 22, 2026 17:00:00 +0300

Shipped today? Order within: Jul 22, 2026 17:00:00 +0300

Description

The Fenix ARB-L18-4000U is a high-capacity 18650 lithium-ion rechargeable battery, delivering 4000mAh of power to provide extended runtimes for your high-drain devices. With its integrated USB-C charging port, this battery allows for direct charging without the need for an external charger, ensuring maximum convenience and efficiency.

Engineered with advanced safety features, it includes overcharge, over-discharge, overcurrent, and short-circuit protection, along with pressure relief vents to prevent overheating or potential hazards. The button-top design enhances its versatility, making it compatible with a wide range of Fenix flashlights and other high-output devices.

Features:

High Capacity: Provides 4000mAh of reliable power for extended use.
USB-C Rechargeable: Built-in USB-C charging port eliminates the need for an external charger.
Advanced Safety Features:
- Overcharge and over-discharge protection
- Overcurrent and short-circuit protection
- Triple overheating protection
- Pressure relief vents to prevent battery swelling or explosion
Durable Design: Constructed with a steel shell to reduce the risk of short-circuiting from impact.
Long Lifespan: Supports up to 500 charge cycles while retaining up to 75% of its original capacity.
Environmentally Friendly: Free from mercury and lead, ensuring safe and eco-friendly usage.

Specifications:

Specification	Details
Capacity	4000mAh
Voltage	3.6V
Charging Current	- Via charger: 800mA recommended, 4A max
	- Via USB-C: 1.5A max
Max Output Current	7A
Dimensions	- Length: 72mm
	- Diameter: 18.75mm
Weight	55g
Compatibility	Designed for high-intensity flashlights; may not fit older Fenix models due to extended length. Ensure battery tube depth is at least 72.5mm for compatibility.
Warranty Period	12 months from the date of purchase