High quality Fenix 18650 3400mAh rechargeable battery (ARB-L18-3400) with protected electronics are based on high-end NCR18650B cells from Panasonic with improved LiNiCoO2 technology, which brings higher safety and longer life. Li-ion rechargeable batteries are characterized by a very high capacity, they do not suffer from the memory effect or self-discharge. Li-ion in the size of 18650 are the best choice in terms of stored energy due to the size and weight of the battery.

Fenix battery protection consists of internal safety mechanisms and protective electronics. The added electronic circuits prevent the cell from being overcharged, its excessive discharge and against a short circuit. If the battery electronics evaluates that the limit values have been reached, it safely disconnects the cell.

Internal protection consists of a separator, the most modern protection against overheating (HRL - Heat Resistance Layer) and a special anti-explosion valve. In the event that the gas pressure in the cell exceeds a certain limit, the internal separator separates the electrodes inside the battery and thus de-facto interrupts the exothermic reaction, and the anti-explosion valve releases the excess gas pressure outside the battery. Thanks to the combination of electronic and mechanical (temperature and pressure) protection, Fenix batteries are among the safest li-ion batteries available.

In its size, the 18650 battery corresponds roughly to two CR123A lithium batteries, which is why it is often used in flashlights as a rechargeable alternative to these primary cells. First, check if your appliance supports this article. 18650 3400 mAh batteries are primarily intended for Fenix LED flashlights - UC35, WT25R, E28R, E30R, PD32 V2.0, PD35, PD35R, TK11 TAC, TK16, TK25 UV, TK25 Red, TK26R, TK35 UE , TK75, FD41, LD30, SD11, SD20. Fenix LED headlamps HM60R, HM61R, HM65R, HM65R-T, HP25R (1000lm version only), HP30R (1750lm version only), lanterns CL26R, CL30R and bike lights Fenix BC21R and BC30.

Attention, due to the length and diameter, it may not fit some old models - for example Fenix PD31, TK11, TK21, TK30 (old version).

Fenix 18650 3400mAh battery parameters

• Nominal voltage: 3.6 V
• Capacity: 3400 mAh, tested with a discharge current of 0.2C with termination at a voltage of 2.5V and a temperature of 25°C
• Maximum current consumption: 2C (6.8 A)
• Maximum charging current: 0.8C (2 A)
• Dimensions: 18.5mm (diameter) x 69mm (length) (+/- 0.5mm)
• Weight 49 grams
• Protection against overcharge, total discharge and short circuit (>7 A).
• Lifetime of more than 500 charging cycles
• Recommended operating temperatures: 0-45°C (charging), -20 to +60°C (discharging)
• Scope of delivery: one piece of Fenix 18650 3400mAh battery (ARB-L18-3400).

Recommended chargers

Fenix ARE-A2 charger
Fenix ARE-A4 charger
USB charger Fenix ARE-D1
USB charger Fenix ARE-D2
Mini USB charger MC1
Dual-channel USB charger FC2
USB charger SC1
Lii-100 USB charger
Lii-500S charger
Lii-600 charger
8-channel USB charger VC8

Warning

• If you are using an older charger purchased approx. before 2014, please check first if it will fit batteries with a length of 69-70 mm.
• Do not discharge the battery below 2.5V if possible
• Do not short-circuit the battery (do not connect the cell poles with a wire)
• Do not throw the battery into fire or water
• Do not insert the battery into the charger in reverse (opposite polarities)
• When using the battery, observe safety guidelines
• Use only an adequate charger that supports li-ion batteries

Warranty

Warranty two years.