ARB-L21-5000U is a high-capacity 21700 Li-ion battery with USB rechargeability, designed for more power and longer usage times. It features its own USB-C charging port, enabling fast and easy charging without a separate charger. The battery comes with a protection circuit on the anode to safeguard against short circuits, overcharging, over-discharging, and overheating. There are also pressure relief vents that expel waste gas in case of a rare internal short circuit, preventing explosions. With a capacity of up to 5000mAh and 500 charging cycles, this battery is suitable only for models supporting 21700 batteries. A USB-C charging cord is not included. Note that this battery is not compatible with 18650 flashlights or older chargers. Compatible chargers are ARE-A2, ARE-A4, ARE-D1, or ARE-D2. When charging, the battery's indicator light is red and turns blue when fully charged. It is currently compatible with E35 V3.0, HT18, LR35R, LR50R, PD36R, PD36 TAC, PD40R V2.0, Tk16 V2.0, TK20R V2.0, TK22 V2.0, TK22 UE, and TK30. Specifications: 5000mAh high capacity, USB Type-C rechargeable, protection circuitry, pressure vents, 500 charge cycles. Capacity: 5000mAh, Voltage: 3.6V, Recommended charging current: 1A, Maximum charging current: 5A, Weight: 72.5g, Size: Length 76mm, Diameter 21.5mm.
Using this Fenix battery is simple. First, make sure your device supports 21700 batteries. Insert the battery into your device correctly. To charge the battery, connect it to a compatible charger like ARE - A2, ARE - A4, ARE - D1, or ARE - D2 using a USB - C cable (not included). You'll see the indicator light turn red, showing it's charging. When it turns blue, the battery is fully charged. Be aware that this battery won't work with 18650 flashlights or older chargers. For maintenance, keep the battery in a cool, dry place. Avoid overcharging or over - discharging it as this can reduce its lifespan. With proper care, you can enjoy up to 500 charging cycles from this high - capacity battery.
