Fenix FE21700USB - 1pc Rechargeable battery USB/3,6V 5000 mAh

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Fenix 21700 5000 mAh rechargeable battery (ARB-L21-5000U) with its own USB-C charging connector. It can be charged by connecting a cable to the USB-C connector (e.g. from a computer, power bank, or mobile... More information

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30,90 €

60 days return policy
24 months warranty

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Brand: Fenix

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Item code: FE0051

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Description and parameters Questions Rating

Product description

Fenix 21700 5000 mAh rechargeable battery (ARB-L21-5000U) with its own USB-C charging connector.
It can be charged by connecting a cable to the USB-C connector (e.g. from a computer, power bank, or mobile phone charger) or in a classic Li-ion charger.
The Fenix 21700 5000 mAh rechargeable batteries with protected electronics are based on cutting-edge LiNiCoO2 technology, which brings both higher safety and longer life.
Li-ion rechargeable batteries are characterized by very high capacity and do not suffer from memory effects or self-discharge. Li-ion in size 21700 is the best choice in terms of stored energy due to the size and weight of the battery and is gradually gaining ground in the car industry, for example.
Fenix battery protection consists of internal safety mechanisms and protective electronics.
Added electronic circuits prevent the cell from overcharging, over-discharging, and against short-circuiting or excessive current draw.
If the battery electronics assess that the limits have been reached, they safely disconnect the cell.
Internal protection consists of a separator, state-of-the-art Positive Temperature Coefficient (PTC) overheating protection, and a special anti-blast 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-blast valve releases the excess gas pressure outside the battery.
The combination of electronic and mechanical (temperature and pressure) protection makes Fenix batteries one of the safest Li-ion batteries available.
Due to the battery's 76-millimeter length (including the protective electronics), it can only be charged in chargers that are designed for this length.
Suitable battery chargers: FE0052, FE0053, FE0054.
Technical parameters:
Nominal voltage: 3.6 V.
Capacity: 5000 mAh, tested at a discharge current of 0.2 C with termination at 2.5 V and 25°C.
Maximum current draw: 8 A.
Maximum charging current: 5 A.
Charging current of built-in USB-C connector: 2A.
Charging time is approximately 3-4 hours.
Dimensions: 21.5mm (diameter) x 76mm (length) (+/- 0.5mm).
Overcharge, full discharge, and short circuit protection (>8 A).
Protective circuit mounted on the plus pole.
A lifetime of more than 500 charge cycles.
Recommended operating temperatures: 0-45°C (charging), -20 to +60°C (discharging).
Charging cable not included.

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Safety instructions

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Parameters

Fenix FE21700USB - 1pc Rechargeable battery USB/3,6V 5000 mAh
Manufacturer	Fenix
Material	Metal
Colour	Yellow; Black
Function	Rechargeable
Height	760 mm
Diameter	215 mm
Weight	0,09 kg
Item package quantity	1
Voltage	3,6 V
Class of protection from injury caused by electricity	3
Warranty period	24 months