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Home Power Batteries Fenix 21700 USB-C Rechargeable 5000 mAh Li-ion Protected Battery
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Fenix  |  SKU: ARB-L21-5000U

Fenix 21700 USB-C Rechargeable 5000 mAh Li-ion Protected Battery

£29.94

The Fenix ARB-L21-5000U is a premium quality high capacity 21700, 5000 mAh lithium-ion battery specifically designed for high intensity torch use and is the perfect companion for for all Fenix 21700 powered lights.

As well as being able to charge in a battery charger (Fenix charger recommended) the ARB-L21-5000U has an additional feature that sets it apart from standard 18650 batteries as it has a built-in USB-C charging port in the top of the battery.

Using a USB-C charging cable this battery can be easily charged up which is not only convenient but can also save money on buying a separate charger. A charging indicator will glow red once the charging cable is plugged in and connected to power to show charging is in progress and it will turn blue once charging is complete.

Please note: This battery is larger than an 18650 battery and cannot be used in standard 18650 sized torches. Please check the dimensions of your intended application before purchasing, as they may not fit some products.

Product Features

8 A maximum discharge current
High capacity (5000 mAh), great reliability and compact design
1 A recommended charging current, 5 A maximum (Charges up to 2 A max via USB port)
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
12 months warranty from date of purchase

Battery Charger Information:
You will need to purchase a cable with a USB-C connection or 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: 72.5 grams per battery
Details for Fenix ARB-L21-5000U 21700 Protected Li-ion Battery
Battery Technology: Lithium-ion (Rechargeable)
Diameter: 21.5 mm
Height: 76 mm
Voltage: 3.6 V
Capacity: 5000 mAh
Charging Current: Recommended 1 A, Maximum 5 A
Maximum Discharge Current: 8 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 3.6 V, 5000 mAh USB-C rechargeable lithium-ion protected battery x 1

Customer Reviews

Based on 5 reviews
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P
Peter F.
Excellent battery

Apart from plenty of power, this battery eliminates the need to buy a separate charger or having to charge it inside a torch, which is often via an input with a rubber seal, increasing the risk of water ingress.

W
William B.
Great product

The battery is does exactly what it says and at a good price too.

S
Steve J.
Just as promised

Straight forward sale, easy to order and delivered when stated. All in all a smooth transaction. The battery came well packaged and is the genuine thing. Thanks and would definitely recommend.

12
Fenix 21700 USB-C Rechargeable 5000 mAh Li-ion Protected Battery
Fenix

Fenix 21700 USB-C Rechargeable 5000 mAh Li-ion Protected Battery

£29.94

The Fenix ARB-L21-5000U is a premium quality high capacity 21700, 5000 mAh lithium-ion battery specifically designed for high intensity torch use and is the perfect companion for for all Fenix 21700 powered lights.

As well as being able to charge in a battery charger (Fenix charger recommended) the ARB-L21-5000U has an additional feature that sets it apart from standard 18650 batteries as it has a built-in USB-C charging port in the top of the battery.

Using a USB-C charging cable this battery can be easily charged up which is not only convenient but can also save money on buying a separate charger. A charging indicator will glow red once the charging cable is plugged in and connected to power to show charging is in progress and it will turn blue once charging is complete.

Please note: This battery is larger than an 18650 battery and cannot be used in standard 18650 sized torches. Please check the dimensions of your intended application before purchasing, as they may not fit some products.

Product Features

8 A maximum discharge current
High capacity (5000 mAh), great reliability and compact design
1 A recommended charging current, 5 A maximum (Charges up to 2 A max via USB port)
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
12 months warranty from date of purchase

Battery Charger Information:
You will need to purchase a cable with a USB-C connection or 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: 72.5 grams per battery
Details for Fenix ARB-L21-5000U 21700 Protected Li-ion Battery
Battery Technology: Lithium-ion (Rechargeable)
Diameter: 21.5 mm
Height: 76 mm
Voltage: 3.6 V
Capacity: 5000 mAh
Charging Current: Recommended 1 A, Maximum 5 A
Maximum Discharge Current: 8 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 3.6 V, 5000 mAh USB-C rechargeable lithium-ion protected battery x 1

View product

Let customers speak for us

from 3119 reviews
Illuminating

On the lowest level the light is a little green. Much better at the other illumination level. Takes a while to charge through the USB interface. The battery lasts well. Good for walking the dog at night around poorly illuminated roads.

Steve
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I bought my Nitecore EDC27 Slim Rechargeable LED Torch quite a while ago. It has taken me a while to get to know what this amazing bit of kit can do! Well it's a torch! yes but's it's more than that! Yes I know it can be useful when taking the rubbish out to find the item you dropped out of the bag blah blah. Now I am a bit older & a bit more savvy, I have bought some work trousers with many pockets in them for all the things it seems you need to carry around in life. In the long pocket next to my Biro pen & propelling pencil is my torch with it's lanyard attached. So I always have it with me. I have found it useful in many ways, one of which was when I broke down in my very old car, I knew I would have to wait a long time for recovery, so I looked up on my phone what to do on my phone, while changing the light settings on my torch when I needed to find the problem. I had a Hi Vis jacket on, but i was in the middle of nowhere. So I used the flashing setting when the van got near so he could find me that bit easier. Yes it's still a torch you say, yes, another time I was walking down an alleyway on a short cut home, when out popped some unwanted people who I was unsure of, as I got near them they asked if they could use my phone, with that I selected the brightest mode, shone it in their faces to temporarily blind them & ran as fast as I could. So for me it's more than a torch. Something I hardly ever leave home without, useful when you lift drops his keys in an unlit pub car park in the rain on a very cold night.
Other stuff. I find the small screen that displays various different things invaluable. Especially if you are going out on a cold winters night, has the torch got enough of a charge, well you can check that, the slimness of it also comes in handy when in your best bib & tucker (a suit) you can easily hide it in your inside pocket. How long does it last, a long time, I have put a bit of string on a label for when I charge it, I charge it so infrequently I nearly forget which one it is, I do use it a lot! Cost, yes it's expensive, but you get what you pay for, very good quality. I really recommend it! Mister XR

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