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It also includes a protection circuit in the anode to help prevent short circuits, over charge/discharge and over heating. This battery can quickly be charged without the need for a separate charger. This not only save you money from purchasing a charger, but also convenience of not having to carry around another device. Fenix has increased its emphasis on safety by building in features to prevent short circuits and design multiple layers of protection. The new button-top design better accommodates a variety of flashlight brands. This will work in all of the models that utilize the standard Li-ion 18650, including best sellers like the PD35, PD35Tac, TK20R, TK75, TK15UE, etc. List Price: $35.00 Our Price: $26.99 Savings: $8.01 Availability:: Usually Ships in 5 To 10 Business Days Product Code: FNX-ARB-L18-3500U Qty: Description Technical Specs The Fenix ARB-L18-3500U is a high capacity 18650 Li-ion rechargeable battery with a built-in micro-USB charging port. It also includes a protection circuit in the anode to help prevent short circuits, over charge/discharge and over heating. This battery can quickly be charged without the need for a separate charger. This not only save you money from purchasing a charger, but also convenience of not having to carry around another device. Fenix has increased its emphasis on safety by building in features to prevent short circuits and design multiple layers of protection. The new button-top design better accommodates a variety of flashlight brands. This will work in all of the models that utilize the standard Li-ion 18650, including best sellers like the PD35, PD35Tac, TK20R, TK75, TK15UE, etc. Brand FenixARB-L18-3500U Rechargeable Battery3500mAh high capacity18650 Li-ion rechargeable with a protection circuitProtection circuitry to prevent short circuitsPressure vents to prevent explosions500 charge cyclesVoltage: 3.6VCharging Current: Recommended 1A, maximum 2ACharging Current USB Port: 0.8AWeight: 1.8 ounces (50g)Size: Length: 2.8 Inch (70mm) Diameter: 0.7 Inch (18.6mm)Warranty Period: 12 month from date of purchaseImportedUPC 6942870304724MPN ARB-L18-3500U Features Brand FenixARB-L18-3500U Rechargeable Battery3500mAh high capacity18650 Li-ion rechargeable with a protection circuitProtection circuitry to prevent short circuitsPressure vents to prevent explosions500 charge cyclesVoltage: 3.6VCharging Current: Recommended 1A, maximum 2ACharging Current USB Port: 0.8AWeight: 1.8 ounces (50g)Size: Length: 2.8 Inch (70mm) Diameter: 0.7 Inch (18.6mm)Warranty Period: 12 month from date of purchaseImportedUPC 6942870304724MPN ARB-L18-3500U You May Also Like Fenix ARB-L18-3500 Rechargeable Battery Fenix ARB-L18-3400 Rechargeable Battery Fenix ARB-L14-1600U Rechargeable Battery Fenix Rechargeable Li-ion Battery ARB-L21-5000v2 Our Price: $25.99 Our Price: $23.95 Our Price: $8.50 Our Price: $24.95 Fenix ARB-L16-700UP Battery Fenix ARB-L18-2600U Rechargeable Battery Fenix Smart Battery Charger ARE-D2 Fenix Smart Battery Charger - ARE-D1 Our Price: $7.95 Our Price: $13.99 Our Price: $26.95 Our Price: $14.99 Share your knowledge of this product. 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