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MecArmy U18-34 18650 3400mAh 3.7V Lithium Ion (Li-ion) Button Top Battery with Micro USB Charging Port

Item #: MEC-ARMY-U18-34
Brand: MecArmy
Item #: MEC-ARMY-U18-34
Brand: MecArmy

MecArmy U18 3400mAh 18650 Battery

Micro USB Rechargeable

The MecArmy U18 3400mAh 18650 battery is capable of power high-drain devices, including your LED flashlight. This rechargeable power source has a lithium-ion chemistry, which has become the go-to for powering portable electronics. The U18 3400mAh 18650 battery is equipped with a micro USB charge port, which makes it incredibly easy to recharge. Instead of inserting the battery into a separate charger, which typically requires AC power, simply connect the U18 to a USB power source, such as a computer. This makes it even easier to travel with your LED flashlights as you no longer have to carry around a bulky charger to keep them powered. When plugged in, an LED light will glow red when charging and green when completely charged. What's great about the MecArmy U18 18650 battery is that it is also compatible with standard chargers, if you'd prefer to re-power the cell this way. This 3400mAh 18650 battery is a suitable power source for all of your powerful LED flashlights.


  • Built-in micro USB charging port eliminates the need for a separate battery charger (USB cable sold separately)
  • Compatible with standard Li-ion battery chargers for added convenience
  • LED status indicator notifies you when charging is complete
  • Internal Panasonic cell is from a reliable brand


  • Battery Size: 18650
  • Battery Chemistry: Lithium-ion
  • Nominal Voltage: 3.7V
  • Nominal Capacity: 3400mAh
  • Working Current Consumption: 12UA (max)
  • Charging Time: 7 hours
  • Estimated Charge Cycles: 500 cycles
  • Discharge Cut-off Voltage: 2.75V
  • Dimensions:
    • Length - 2.779" (70.6 mm)
    • Diameter - 0.713" (18 mm)
  • Weight: 1.418 oz. ( g)
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