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Fenix ARB-L21-5000 V2.0 Rechargeable Battery

Fenix ARB-L21-5000 V2.0 Rechargeable Battery - Main image
$17.47 $24.95 In stock

Category: Accessories

ARB-L21-5000 V2.0 is a high-capacity 21700 Li-ion rechargeable battery built for more power and longer runtimes. 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.

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, ARE-D2, OR ARE-X1 V2.0.

Specifications of the ARB-L21-5000 V2.0 Rechargeable Battery

  • New 21700 battery type
  • 5000mAh high capacity
  • Protection circuitry to prevent short circuits
  • Pressure vents to prevent explosions
  • 500 charge cycles
  • Currently compatible with all lights using the 21700 battery, except the discontinued PD40R V2.0.

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

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.2 / 5 · 5 reviews)

Samuel ★★★★★

The protection circuit in the anode gives me real peace of mind when I'm swapping cells in the dark or on a trail. It's held a solid charge across several long night hikes, and the 5000mAh capacity honestly outlasts everything else I've cycled through.

Daniel C. ★★★★★

The capacity bump is real—my light runs noticeably longer between swaps, and the anode protection circuit gives me peace of mind when I toss it in a pack with keys. It’s a solid upgrade over the older cells I was using.

Charlotte E. ★★★★☆

The 5000mAh capacity has been holding up well in my flashlight, easily lasting through several evenings of use. The protection circuit in the anode gives me some peace of mind, though I wish it came with a case to keep it from rattling in my bag. Charging it took a bit longer than I expected, but th