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Fenix ARB-L21-5000U Rechargeable Battery

$34.00 $25.95

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ARB-L21-5000U is a high capacity 21700 Li-ion USB rechargeable battery built for more power and longer runtimes. This battery has its own USB-C charging port for quick/easy charging without the need for a separate charger. Additional features include a protection circuit in the anode to help prevent short circuits, over charge/discharge and over heating. Pressure relief vents which expel waste gas in the rare case of an internal short circuit preventing an explosion. Battery capacity up to 5000mAh. 500 charging cycles. This product will only work in those models supporting 21700 batteries. A USB-C charging cord is NOT included. Important Note:

THIS BATTERY IS NOT COMPATIBLE WITH 18650 FLASHLIGHTS OR OLDER STYLE CHARGERS. COMPATIBLE CHARGERS ARE THE FENIX ARE-A2, ARE-A4, ARE-D1 OR ARE-D2.

SKU: ARB-L21-5000UN/ABarcode: 6942870369358N/A

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More Information

Specifications of the ARB-L21-5000U Rechargeable Battery

  • 5000mAh high capacity
  • USB Type-C rechargeable battery
  • Protection circuitry to prevent short circuits
  • Pressure vents to prevent explosions
  • 500 charge cycles
  • Indicator light on battery is red while charging, blue when charged
  • Compatible with the E35 V3.0, HT18, LR35R, LR50R, PD36R, PD36 TAC, PD40R V2.0, Tk16 V2.0, TK20R V2.0, TK22 V2.0, TK22 UE, and TK30.

Capacity: 5000mAh
Voltage: 3.6V
Charging Current: Recommended 1A, maximum 5A
Weight: 2.6 ounces (72.5g)
Size: Length: 2.99″ (76mm) Diameter: 0.85″ (21.5mm)
Warranty Period: 12 month from date of purchase

Customer Reviews

Based on 165 reviews
92%
(152)
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j
jeomar rodriguez
Great!!

the batteries work perfectly.

M
MICHAEL P GIROUARD
battery works well

Got the batteries quickly and they work. YEA!

M
Melanie Merrihew
A great purchase!

Love having the second battery! Honestly the only complaint I have is that that headlamp battery does not come with the charging port like this one

Hi Melanie - I'm not sure which headlamp you have, but generally speaking, if one of the lights, be it a headlamp, flashlight, bike light or camping lantern, has the charging port on the light itself, the battery inside does NOT have the charging port on it, since it can easily be charged in the light. The 'U' batteries come in the lights

J
Jef Allbright
Happy with the battery; happy with the service and delivery.

I received the battery quicker than promised, and it meets my needs. The USB-C charging is very convenient.

D
Dennis Bowman
Great Batteries

I'm an inspector and I ordered these to have backups for various flashlights so I don't have down time waiting for batteries to recharge if goes dead due to being lazy and not keeping them charged. They charged right up upon receipt and they're ready to go. I expect these to perform as well as all the other Fenix products I own and use everyday.

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