he Klarus 18GT-36UR is a high discharge 18650 Li-ion battery with a built-in micro USB port for easy charging. This battery has 3.6 volts of reliable lithium power and a high 3600mAh capacity for superior runtimes. It's maximum output rate of 10A provides an optimal performance for almost any high discharge flashlights and other devices. 


  • High discharge battery made for high performance flashlights

  • 3.6 volts of reliable lithium power

  • High 3600mAh capacity for long runtimes

  • High quality general purpose 18650

  • Can withstand extreme temperatures

  • Built-in Micro USB port for convenient charging

  • Multiple protections to keep battery performing at full specifications

  • Can be recharged over 500 times - saving you money

  • Quick charge time - about 4.5 hours for a full charge

Technical Specifications:

  • Battery Size: 18650

  • Battery Chemistry: Lithium Ion

  • Terminal Type: Button Top

  • Rechargeable: Yes

  • Charging Indicator: Yes - LED

  • Charging Port: Yes - Micro USB

  • Protected Cell: Yes

  • Nominal Voltage: 3.6V

  • Nominal Capacity: 3600mAh

  • Max Charging Current: 3.6A

  • Max Discharge Current: 10A

  • Recommended Charging Current: 2A

  • Estimated Charge Cycles: 500+ cycles

  • Estimated Charge Time: 4.5 hours

  • Operating Temperature Range: -4°F to 140°F (-20°C to 60°C)

  • Shelf Life: 3 Years

  • Certifications: RoHs, CE


  • Length: 2.75" (70mm)

  • Diameter: 0.73" (18.5mm)

  • Weight: 1.83oz. (52g)

Klarus 18GT-36UR 18650 3600mAh 3.6V Protected Lithium Ion (Li-Ion) Button Top Battery with Micro USB Charging Port

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