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• Norminal Voltage: 3.7V (fully charged at 4.2V)
• Minimum discharge voltage: 3.0V, lower is possible but it will shorten the lifespan and reduce the capacity.
• Typical Rated Capacity: 1960mAh (min), 2000mAh (max)
  • From our test, we manage to get higher capacity at 2150 to 2250mAh from 10 pieces (randomly picked)
• Recommended charging rate:
  • Rapid Charge: 0.5C, ~1A
  • Standard Charge: 0.2C, ~400mA
• Charging Voltage: 4.2V ± 0.03V
• Recommended discharge rate:
  • Maximum discharge: 1C, ~2A
  • Standard discharge: 0.2C, 400mA, down to 3.0V
• 18650 size: 18mm diameter and 67.5mm length
• No protection circuit
• Flat terminal at both end
• Life cycle: > 500 times if under proper charge and discharge condition

An 18650 is a lithium ion rechargeable battery. Their proper name is “18650 cell”. The 18650 cell has voltage of 3.7v and has between 1800mAh and 3500mAh (mili-amp-hours). There are two types; protected and unprotected. We absolutely recommend protected 18650 batteries. The average 18650 battery charge time is about 4 hours. Charge time can vary with amperage and voltage of the charger and the battery type.

Flashlights, electronics, laptops, vaping and even some electric vehicles use 18650s. The Tesla uses 7180 of these batteries. Many high lumen flashlights such as the Thrunite TN14 or Fenix PD35 use the 18650 or the even larger 21700. Laptops and other electronic devices use one or more 18650’s and have recharging electronics built in. 18650’s are also used in vaping (smoking) devices.

18650s are are generally Lithium Ion batteries. If you are familiar with electronics you can change out some battery packs manually, but be careful – using the wrong type of 18650 or using it incorrectly can cause a fire.

Packing List:

• 1 x 18650 2000mAh battery

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