Description of the battery 21700 Fenix ARB-L21-5000U:

The Fenix ARB-L21-5000u form factor 21700 battery has a built-in Type-C charging port. The battery capacity reaches 5000 milliampere-hours. The battery can be used in flashlights and other devices that work autonomously. It is equipped with a protection board against overcharging and overdischarge.

Fenix ARB-L21 – 5000u is a lithium-ion battery. You can charge both with the help of ordinary chargers and with the help of the built-in charging USB port. Charging is also possible through the built-in charger.

Using the Fenix ARB-L21-5000u battery, you can charge from a solar panel, in a car, and also in other ways. In the process of charging using the Type-C port, the status of the process is shown by the light indicators built into the end. While the battery is charging, the red LED lights up, and when the charging is complete, the green LED light appears when the connection is made. Thanks to a well-thought-out protection system, the battery is protected against excessive charging and discharging, overheating and short circuit. As a result, the service life of the battery increases. The resource is approximately 500 charge/discharge cycles.

The protective board of the Fenix ARB-L21-5000u battery is built into the anode. The board is covered with a steel plate, the battery itself has a steel shell, so it is possible to prevent the danger of short circuit. There are two openings at the top of the case so that excess gas pressure can be released. The gas connection may appear due to an internal short circuit. In the battery, the developers provided for the possibility of preventing the battery from blowing up or exploding. The battery is designed to avoid various risks during use.

If the battery is used correctly, it can retain up to 75 percent of its initial capacity. Even when five hundred and fifty complete cycles of charging and discharging have been performed. The Fenix company produces reliable batteries, they are distinguished by innovative technologies and are designed for a long period of use.

Features of the battery:

• type size: 21700;
• capacity is 5000 milliampere-hours;
• Nominal power reaches 18 Watt * h;
• voltage is 3.6 Volts;
• Maximum voltage reaches 4.2 8 Amps;
• recommended charging current equal to one ampere;
• maximum charging current: 5 Ampere;
• recommended charging current via USB port: 2 Ampere;
• battery dimensions are 21.5 * 76 millimeters; gram.

The set includes the battery itself and its packaging.

Factory warranty on the battery is provided for one hour.