Surefire SF18650B Battery Micro USB Lithium-Ion Rechargeable Battery

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From Optics Force

Charge. Win. Repeat. 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. 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.