SF18650B Surefire Battery

• 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

 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.