Fenix ARB-L21 rechargeable battery (21700 5000 mAh 3.6 V)

Fenix ARB-L21-5000 V.2

High-current lithium-ion battery type 21700 with an impressive capacity of 5000 mAh equipped with an advanced protection system.

Reliability and efficiency

ARB-L21-5000 is currently the highest capacity flashlight power cell, providing much longer operation and consistent current output.

Thanks to its advanced design and multi-level protection, the manufacturer guarantees as many as 500 charging cycles with up to 75% capacity retention. This means that the cell can be discharged and recharged daily over a period of 1.5 years-which clearly emphasizes its quality and performance. Due to the lack of memory effect, Fenix batteries can be recharged at any time without adversely affecting their capacity and service life.

Steel body provides high mechanical strength and minimizes the risk of short-circuiting due to a fall or impact. The battery uses pressurized vents that are responsible for expelling gas, which can lead to a bloat or explosion during an incidental short circuit.

Advanced security features

The manufacturer has used a multi-level security system that maximizes the life and ensures the highest level of safety of the battery pack.

Security systems:

• Protection against over-discharge during use
• protection against overcharging during the charging process
• circuit protection against short circuits
• overheating protection
• cathode with PTC protection (overload protection)
• In order to maximize the life of the battery, it is recommended to use a charger with a current of 1 A for charging, a maximum of 5 A. Maximum discharge current of 7.5 A.