Home Power Batteries Fenix High Discharge 21700 4000 mAh Li-ion Protected Battery (ARB-L21-4000P)
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Fenix  |  ARB-L21-4000P

Fenix High Discharge 21700 4000 mAh Li-ion Protected Battery (ARB-L21-4000P)

£27.95
Important Notice: Batteries cannot be returned once they have been opened for reasons of safety and resale. Therefore please ensure you are buying the correct batteries for the intended purpose. If you need assistance prior to purchase then please do get in touch.

The Fenix ARB-L21-4000P is a premium quality high capacity 21700, 4000 mAh lithium-ion battery with a continuous output current of 10 A, specifically designed for high intensity use in torches such as the Fenix LR35R.

Please note: This battery is larger than an 18650 battery and cannot be used in standard 18650 sized torches.

Product Features

10 A continuous discharge current, 18 A maximum
High capacity (4000 mAh), great reliability and compact design
Recommended 1 A charging current, 4 A maximum
Protection circuit built into positive terminal for outstanding damage resistance
Triple overheat protection for safety and reliability
Built-in overcharge and over discharge protection
Unique structural design for better impact resistance
Button top positive contact for greater versatility

Battery Charger Information:
You will need to purchase a suitable battery charger if you do not have one, please see the related products. This battery not compatible with the X and C series of Fenix chargers, but can be used with the ARE-A4 and ARE-D2.

Pack Information
Batteries per Pack: 1
Weight: 70 grams per battery
Details for Fenix ARB-L21-4000P 21700 Protected Li-ion Battery
Battery Technology: Lithium-ion (Rechargeable)
Diameter: 21.5 mm
Height: 76 mm
Voltage: 3.6 V
Capacity: 4000 mAh
Charging Current: Recommended 1 A, Maximum 4 A
Maximum Discharge Current: 10 A

Important Safety Information

Lithium-ion batteries should never be left charging unattended under any circumstances. The user must have knowledge of how to charge and discharge Li-ion batteries before using them - for more information please click here. Always use a charger that is designed to recharge the particular lithium-ion cell that you wish to recharge. Never use a DC adaptor to charge Li-ion batteries. We are NOT responsible for any damage that is caused by the misuse of lithium-ion batteries. We recommend charging any lithium-ion cell on a metal surface or other non-flammable surface.

Packaging and Contents

Supplied in retail pack and contains:
Fenix 21700 10 A 4000 mAh rechargeable lithium-ion protected battery x 1

Let customers speak for us

from 3792 reviews
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I’d recommend it. Especially for the railway.

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I bought this headlight for my son as I already have the one and he is delighted with it as I am with mine.The quality of these sells themselves and I bought mine because someone gave me a torch made by this manuacturer and the batteries last for years.

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