# Fenix ARB-L21 21700 Rechargeable Li-ion Battery 6000 mAh 3.6V

**URL:** https://aio.lv/en/product--no-name-039-638--12525647
**Data updated:** 2026-06-17 08:22 (EEST)
**Category:** Batteries
**Manufacturer:** No name
**Manufacturer code:** 039-638
**EAN:** 6942870311159
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 35.49 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 29.33 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--no-name-039-638--12525647

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

The Fenix ARB-L21 is a high-capacity 21700 rechargeable lithium-ion battery designed for high-performance flashlights and electronic devices. With a capacity of 6000 mAh and a voltage of 3.6V, it provides reliable power and long runtime. This battery features advanced protection circuits to ensure safety and durability during intensive use, making it an ideal power source for professional and outdoor equipment.

## Long description

The Fenix ARB-L21 21700 rechargeable Li-ion battery is a high-capacity power solution engineered for demanding electronic devices and high-performance flashlights. With a substantial capacity of 6000 mAh and a stable voltage of 3.6V, this battery is designed to provide extended runtimes and consistent power output for professional and outdoor equipment. It incorporates advanced protection circuitry directly into the design to prevent overcharging, over-discharging, and short circuits, ensuring a safe and reliable user experience.
Advantages
This battery offers a significant energy density advantage compared to standard battery sizes, allowing for longer operation times without the need for frequent recharging. The integrated protection circuit module enhances safety by mitigating common risks associated with lithium-ion technology. Its robust construction is built to withstand the rigors of intensive use, making it a dependable choice for users who require consistent performance in various environmental conditions.
Suitable for
High-performance LED flashlights
Professional tactical equipment
Portable electronic devices requiring 21700 cells
Outdoor and emergency lighting gear
When it may not be suitable
This battery is not compatible with devices designed for standard AA, AAA, or 18650 battery sizes due to its specific 21700 form factor. It should not be used in equipment that does not explicitly support 21700 lithium-ion cells.
Key specifications
Capacity: 6000 mAh
Voltage: 3.6V
Battery Type: 21700 Lithium-ion
Integrated protection circuit
How to use
To use the Fenix ARB-L21, insert the battery into a compatible charger or device, ensuring the positive and negative terminals are aligned correctly according to the polarity markings. Charge the battery fully before its first use using a charger specifically designed for 21700 lithium-ion cells. Avoid exposing the battery to extreme temperatures or moisture to maintain its longevity and performance.
What to consider before purchase
Verify that your device is compatible with the 21700 battery size
Ensure you have a charger capable of supporting 3.6V 21700 Li-ion batteries
Check the physical dimensions of your device's battery compartment
Usage recommendations
For optimal battery health, store the cell in a cool, dry place and avoid leaving it fully discharged for extended periods. If the battery will not be used for a long time, it is recommended to charge it to approximately 50% capacity.

## FAQ

### How much does the Fenix ARB-L21 21700 6000 mAh 3.6V Battery 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 — 131 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 14.07.2026 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 No name 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 No name 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. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12525647/68881218_large.webp