Surefire SF18350 Micro USB Rechargeable Battery, 3.7V 1100mAh

The Surefire SF18350 is a protected 18350 lithium‑ion rechargeable battery featuring an integrated Micro‑USB charging port for convenient charging from common USB power sources. It provides a nominal voltage of 3.7V and a rated capacity suitable for extended runtime in compatible high-drain devices. Note that the SF18350 is compatible with SureFire Dual Fuel single 123A-powered products and is not compatible with non-Dual Fuel single 123A-powered products.

Key Specifications

• The battery type is Protected 18350.
• The nominal voltage is 3.7V.
• The rated capacity is 1,100 mAh.
• The chemistry is Lithium‑ion.
• Certification is UN38.3.
• The charge end voltage is 4.2V.
• The charge time from empty via USB is 3 hours.
• The standard USB charge rate is 500 mA (external 1A/1C).
• The dimensions are 39.8 ±0.3 mm x 18.6 ±0.3 mm.
• The energy content is 4.07 Wh.

Integrated Micro‑USB charging and a protected cell design make the SF18350 a practical, serviceable power option for compatible lights and devices where a compact, rechargeable 18350 cell is required. The combination of straightforward USB rechargeability and a specification set aimed at high-drain applications provides dependable runtime without the need for a separate charging cradle.