Rechargeable battery Fenix ARB-L21-5000

Name: Rechargeable battery Fenix ARB-L21-5000 Lithium-Ion 910645
Brand: Fenix
SKU: 11431935
Price: 35.49 EUR
Availability: InStock

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Rechargeable battery Fenix ARB-L21-5000 Lithium-Ion 3.6V 5000mAh

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Short description

The Fenix ARB-L21-5000 is a rechargeable Lithium-Ion battery with a voltage of 3.6V and a capacity of 5000mAh. It measures 76mm in height and 21.5mm in diameter, weighing 72.5g. This battery is designed for high-performance devices, providing reliable power and longevity.

Available for order: 132 pcs.

Warranty: 2 Years

SKU: 11431935

Manufacturer: Fenix

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Deliver the order:

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to the Customer Service Center at Kengaraga 2b, Riga

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Customer service center

2b. Kengaraga str., Riga, Latvia, LV-1063

03.07.2026 {{selectedOffer.officeDeliveryString}}

free

Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!

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From 4.99 € (Weight: 0.11 kg)

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From 1.99 €

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Payment Methods:

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Product information

Description

The Fenix ARB-L21-5000 is a rechargeable Lithium‑Ion 21700 cell with a nominal voltage of 3.6V and a rated capacity of 5000mAh. With a height of 76 mm, a diameter of 21.5 mm and a weight of 72.5 g, this single‑cell battery is designed to deliver sustained energy for high‑performance devices where reliable, long‑lasting power is required.

Advantages

The battery combines a high 5000mAh capacity with the compact 21700 format to extend runtime compared with smaller cells. Its Lithium‑Ion chemistry provides a balance of energy density and cycle life suitable for repeated recharging. The cell’s mechanical dimensions and weight make it compatible with equipment built for 21700 batteries, while its 3.6V nominal voltage matches devices that specify this battery type.

Suitable for

High‑drain flashlights and portable lighting
Power banks and portable chargers designed for 21700 cells
Vape devices and electronic tools that accept 21700 batteries
Other high‑performance consumer electronics compatible with 3.6V 21700 Li‑Ion cells

Key specifications

Battery type: Rechargeable Lithium‑Ion (Li‑Ion)
Nominal voltage: 3.6 V
Rated capacity: 5000 mAh
Cell size: 21700
Height: 76 mm
Diameter: 21.5 mm
Weight: 72.5 g
Quantity included: 1 pc

How to use

Insert the Fenix ARB-L21-5000 into devices designed for 21700 Li‑Ion cells, observing the correct polarity. Charge the battery with a charger compatible with Li‑Ion chemistry and the 21700 format, following the charger manufacturer’s instructions. Avoid using chargers or devices that require different cell sizes or voltages. Monitor the battery during the first charge cycles to confirm proper operation.

Usage recommendations

Store the battery in a cool, dry place and avoid prolonged exposure to high temperatures. Use a dedicated Li‑Ion charger with appropriate current and safety features. Do not short‑circuit, disassemble, or expose the cell to fire. Follow device and charger manufacturer guidelines for charging rates and safe handling to maximize service life.

Specifications

Battery type:: Rechargeable battery
Battery technology:: Lithium-Ion (Li-Ion)
Battery voltage:: 3.6 V
Number of batteries included:: 1 pc(s)
Weight:: 0.0725 kg
Battery size(s):: 21700

All features

Battery

Battery type:: Rechargeable battery
Battery size(s):: 21700
Battery technology:: Lithium-Ion (Li-Ion)
Battery voltage:: 3.6 V
Number of batteries included:: 1 pc(s)
Battery capacity:: 5000 mAh
Product colour:: Black, Yellow
Battery level indicator:: No
Battery recharge cycles (max):: 500
Power protection features:: Overcharge, Overdischarge, Short circuit

Weight & dimensions

Weight:: 0.0725 kg
Height:: 76 mm
Diameter:: 21.5 mm

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Customer questions

FAQ

How much does the Rechargeable battery Fenix ARB-L21-5000 cost, and is it available for purchase?

The price is 35.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 132 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 03.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All Fenix products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Fenix service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: battery type, battery technology, battery voltage, number of batteries included, weight, battery size(s), compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

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