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Fenix 21700 5000 mAh (Li-Ion) rechargeable battery

Name: Fenix 21700 5000 mAh (Li-Ion) rechargeable battery
Price: 24.9 EUR
Availability: InStock
Rating: 5 (3 reviews)

24.90 €

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Product description

Top rechargeable batteries Fenix 21700 5000 mAh V2.0 (ARB-L21-5000 V2.0) with protective electronics (protected) are based on top technology LiNiCoO2, which brings higher safety and also longer life. Li-ion rechargeable batteries are characterized by a very high capacity, they do not suffer from memory effect or self-discharge. Li-ion in size 21700 are the best choice in terms of stored energy due to the dimensions and weight of the accumulator, they are gradually gaining ground, for example, in the automotive industry.

Fenix battery protection consists of internal safety mechanisms and protective electronics. The added electronic circuits prevent the cell from being overcharged, its excessive discharge, as well as a short circuit or excessively high current consumption. If the battery electronics evaluates reaching the limit values, it safely disconnects the cell.

The internal protection consists of a separator, the most modern protection against overheating (PTC - Positive Temperature Coefficient) and a special anti-explosion valve. If 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.

This accumulator is intended, for example, for use in the Fenix HT18, PD36R PRO, PD36 TAC, PD40R, TK20R V2.0, TK22 UE, E35 V3.0 and C7 LED flashlights. However, it cannot be used in 18650 battery lights due to its larger dimensions!

Due to the length of the battery of 76 millimeters (including protective electronics), it can only be charged in chargers that are adapted to this length. Viď. recommended chargers below.

Parameters of the Fenix 21700 5000mAh battery

Nominal voltage: 3.6 V
Capacity: 5000 mAh, tested with a discharge current of 0.2 C with termination at a voltage of 2.5 V and a temperature of 25°C
Maximum current consumption: 7.5 A
Maximum charging current: 5 A
Dimensions: 21.5 mm (diameter) x 76 mm (length) (+/- 0.5 mm)
Weight 73.5 grams
Protection against overcharging, total discharge and short circuit (>7.5 A). The protective circuit is attached to the plus pole.
Lifetime of more than 500 charging cycles
Recommended operating temperatures: 0-45°C (charging), -20 to + 60°C (discharging)
Package contents: one piece of Fenix 21700 5000mAh battery (ARB-L21-5000 V2.0).

Recommended chargers

Due to the length of the battery of 76 millimeters (including protective electronics), it can only be charged in chargers that are adapted to this length and are listed below. They will not fit into other models.

Charger Fenix ARE-A2
Fenix ARE-D1 USB charger
Fenix ARE-D2 USB charger
Charger Fenix ARE-A4
USB charger FC2
USB charger SC1
Eight-channel USB charger VC8

Warning

If possible, do not discharge the battery below 2.5 V
Do not short-circuit the battery (do not connect the poles of the cell with a wire)
Do not throw the battery into fire or water
Never insert the battery into the charger upside down (opposite polarities)
When using the accumulator, pay attention to the safety principles
Use only an adequate charger supporting Li-ion batteries

Warranty

Warranty two years.

Capacity: 5000mAh
Weight: 73.5g

Product details

product ID

192086

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Batteries from Fenix

Fenix is a respected brand in the lighting industry, known for its high quality and reliable products. Founded in 2004, Fenix has built a reputation for producing a wide range of flashlights, headlamps, torches and other lighting solutions that are designed for a variety of outdoor, tactical and everyday use options. With its commitment to innovation, durability and reliability, Fenix has become a trusted name in the flashlight and lighting industry.