Fenix ARB-L21-5000U Rechargeable 21700 Battery

Fenix ARB-L21-5000U Rechargeable 21700 Battery

Name: Fenix ARB-L21-5000U Rechargeable 21700 Battery
Brand: Product Brand
Price: 26.95 USD
Availability: InStock
Rating: 4.5 (10 reviews)

Regular price $26.95

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Vendor: Fenix Store

Type: Battery

Sku: FX-ARBL215000U

Availability: In Stock

Sold by LightsDaddy, an authorized reseller.

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Safety & Compliance

Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

www.P65Warnings.ca.gov

All electrical products must be installed by a qualified electrician in accordance with local wiring regulations. Incorrect installation may result in fire, electric shock, or injury.

Always disconnect power at the circuit breaker before installation.

Do not exceed the maximum wattage specified on the fixture label. Keep away from flammable materials. Allow adequate ventilation around the fixture.

Keep out of reach of children. Not suitable for wet locations unless rated IP65 or higher.

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Fenix ARB-L21-5000U Rechargeable 21700 Battery

$26.95

Description Safety & Compliance

The Fenix ARB‑L21‑5000U is a high-capacity 21700 rechargeable Li‑ion battery delivering 5,000 mAh of reliable power for high-drain flashlights and gear. Equipped with a built-in USB‑C charging port, you can recharge it quickly with common USB‑C cables—no separate charger required. Ideal for extended runtime and convenience.

Safety is front and center: it features comprehensive protection circuitry (overcharge, over-discharge, short-circuit, and overheat protection), as well as pressure relief vents for safe energy release. The button-top design ensures compatibility with a wide range of devices. Rated for 500 charge cycles, it maintains dependable performance over time.

Key Specifications:

Capacity: 5,000 mAh, Nominal Voltage: 3.6 V
Charge Rate: USB‑C port, up to 5 A max (standard 1–2 A recommended)
Output: Up to 8 A discharge
Safety Features: Multi-layer protection circuitry, pressure relief vents
Longevity: Up to 500 full charge cycles
Design: Button‑top format, 73 mm long, ~21.6 mm diameter, ~72 g
Warranty: 12‑month manufacturer coverage

A robust and convenient power solution—perfect for tactical flashlights, headlamps, outdoor gear, and emergency devices.

Shipping Note: Lithium ion batteries are considered "dangerous goods" per US transportation regulations and can often only be transported via ground shipment. Orders containing loose batteries will typically take much longer than predicted to be delivered. Delivery times of 14+ days are not uncommon.

⚠️ WARNING (California Proposition 65):
This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, please visit www.P65Warnings.ca.gov.

Fenix ARB-L21-5000U Rechargeable 21700 Battery

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Fenix ARB-L21-5000U Rechargeable 21700 Battery

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Fenix ARB-L21-5000U Rechargeable 21700 Battery

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Fenix ARB-L21-5000U Rechargeable 21700 Battery

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Customer Reviews

Customer Approved

Extensive Selection

Fast, Reliable Delivery

Top-Tier Quality