The SF18650B is a Lithium Ion-protected 18650 battery with MICRO-USB charge capability. This allows the user to conveniently charge the battery using any USB power source such as a USB wall charger, computer/laptop, power bank, or automotive USB port using the included MICRO-USB to USB cable.

Note: Additionally, an external 18650 compatible CC-CV cradle charger (not included) can be used to charge the battery; possibly at a faster rate if so equipped. The SF18650B is compatible with the following SureFire products: FURY-DFT, FURY-IB-DF, EDC2-DFT, M600DF, M640DF, M640DFT and P1R series.

Features of Surefire SF18650B

  • The new champion among SF18650 rechargeable batteries
  • 3. 6 volts / 3500 mAh deliver extended runtime
  • MICRO-USB charging facilitates charging via a variety of power sources

Key Attributes

  • TYPE: Protected 18650
  • VOLTAGE: 3.6V
  • CERTIFICATION: CE, PSE, UN38.3
  • CHARGE END VOLTAGE: 4.2V
  • CHEMISTRY: Lithium-ion
  • DIMENSIONS: 69.4 x 18.6 mm
  • DISCHARGE END VOLTAGE: 2.50V
  • DISCHARGE RATE: 8-10A
  • ENERGY: 12.6 Wh
  • LITHIUM CONTENT: 10.5 g
  • OPERATING TEMP RANGE (CHARGING): 0-45º C, 65%±25%RH
  • OPERATING TEMP RANGE (DISCHARGING): -20º C-+60º C, 65%±25%RH
  • RATED CAPACITY: 3.5 Ah
  • STANDARD CHARGE RATE: Charging through USB can take over 8 hours if fully depleted. Approximately 5 hours of flashlight cutoff
  • STORAGE TEMP RANGE: 0 -35º C 60±25%RH
  • USB CURRENT: 600 mA ± 100 mA
  • USB CHARGE VOLTAGE: 5.0 V ± 0.2 V
  • WEIGHT: 1.7 oz (49 g)