Fenix USB battery ARB-L21U (21700 5000 mAh 3.6 V)

Fenix ARB-L21-5000U is a high quality lithium-ion battery type 21700 with an impressive capacity of 5000 mAh equipped with an innovative charging system using the USB-C port .

Reliability and efficiency

ARB-L21-5000U is Currently the most capacious link to supply flashlights , ensuring much longer work and constant current efficiency.

Thanks to the advanced design and multi -level security, the manufacturer guarantees up to 500 charging cycles with up to 75% capacity .  This means that the cell can be discharged and charged daily during 1.5 years-what clearly emphasizes its quality and performance. Due to the lack of memory effect, Fenix batteries can be topped up at any time , without a negative impact on their capacity and life.

The steel body provides high mechanical strength and minimizes the risk of short circuit caused by falling or impact. The battery uses pressure ventilation holes responsible for gas excretion, which during an incidental short circuit can lead to disgust or explosion.

Quick charging USB-C

The battery uses an innovative charging system in the form of a built-in USB-C port . This extremely practical and convenient solution allows you to charge the cell without the need to use an additional charger.

For charging, all you need is a standard USB-C cable and a power source, e.g. Power Bank, laptop, desktop computer or USB car charger.

The USB battery not only saves money (on the purchase of a charger), provides primarily comfort and charging mobility .

Advanced security

The manufacturer used the multi -level security system , which maximally extends life and provides the highest level of battery safety.

Safety systems:

• Protection against excessive discharge during use
• Protection against reloading during the charging process
• Protection of the circuit against short circuits
• Protection against overheating
• CATODY with PTC protection (anti -reload protection)

Charging is recommended to use a charger with a current of 1 A, a maximum of 5 a.