The Surefire SF18650B is a protected 18650 lithium‑ion rechargeable battery with an integrated micro‑USB charging port. It delivers a nominal 3.6V and a rated capacity of 3,500 mAh for extended runtime in LED flashlights and other high‑drain devices. Integrated charge LEDs indicate charging status, and the protected cell construction supports reliable operation in demanding use. The included micro‑USB to USB cable enables charging from common USB power sources without a cradle.
Key Specifications
- The nominal voltage is 3.6 volts.
- The rated capacity is 3,500 mAh.
- Charging is via an integrated micro-USB port and a Micro-USB to USB cable is included.
- Typical USB charge time from fully depleted is approximately 8 hours.
- The discharge rate is rated at 8–10 A for dependability in high-drain devices.
- This product is a protected 18650 lithium‑ion cell.
- The weight is approximately 1.70 oz (49 g).
- Physical dimensions measure 2.73 inches in length and 0.73 inches in diameter.
- Charge status is indicated by LEDs: red while charging and green when fully charged.
- Certified to CE / PSE / UN38.3 safety standards.
Whether used in everyday carry lights, duty equipment, or other high-drain electronics, the SF18650B offers convenient USB charging and extended runtime in a compact, protected package. Its integrated indicators and robust discharge rating provide practical, dependable performance for users who rely on rechargeable 18650 cells.
This description was generated with AI and may contain errors. Verify specifications and legal restrictions with the manufacturer before purchase. Provided “as-is” without warranties or guarantees.
