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Nitecore NL2150 21700 5000mAh 3.6V Protected Lithium Ion (Li-ion) Button Top Battery - Retail Card

Nitecore NL2150 21700 battery retail blister card front
Nitecore NL2150 21700 battery back of the retail blister card
Nitecore NL2150 21700 Li-ion Battery alternate view 1
Nitecore NL2150 21700 battery retail blister card front
Nitecore NL2150 21700 battery back of the retail blister card
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Nitecore NL2150 21700 battery

3.6V, 5000mAh, 18Wh

The Nitecore NL2150 21700 battery is the newest addition to their line of portable power. This 21700 cell is specifically designed to be used with high performance flashlights and specialty electronics. The high capacity of 5000mAh allows your device to have long efficient run times. Protected with integrated overcharging and discharging circuitry, you can be sure that your battery will be safe through charging cycles and extended use. The lithium-ion chemistry not only provides stable, reliable power, but it also allows for recharging up to 500 cycles! Rechargeable batteries save you money in the long run and help the environment at the same time.

Need a compatible charger for your Li-ion battery? Battery Junction offers a wide selection of smart chargers with different features and channels so you can pick which one is best suited for you. Browse our Li-ion smart charger options here!


  • High performance battery for specialty electronics and lights
  • 3.6V of reliable Li-ion power
  • 5000mAh capacity for long run times
  • Rechargeable up to 500 times
  • 3 Year stable shelf life
  • Overcharge and discharge protection circuitry
  • CE and RoHS Certified

Technical Specifications:

  • Battery Size: 21700
  • Battery Chemistry: Lithium Ion (Li-ion)
  • Terminal Type: Button Top
  • Rechargeable: Yes
  • Protected Cell: Yes
  • Nominal Voltage: 3.6V
  • Nominal Capacity: 5000mAh, 18Wh
  • Max Charging Voltage: 4.2V
  • Discharge Cut-off Voltage: 3V
  • Nominal Charge Current: 1000mA
  • Max Charge and Discharge Current: 5000mA
  • Estimated Charge Cycles: 500 Cycles
  • Shelf Life: 3 Years
  • UPC: 6952506492848

  • Package Dimensions:

    • Length: 5.5" (139.7mm)
    • Width: 3.25" (82.55mm)
    • Weight: 3oz. (86g)

    Battery Dimensions:

    • Height: 2.92" (74.2mm)
    • Diameter: 0.84" (21.4mm)
    • Weight: 2.55oz (72.3g)
    Battery Size:21700
    Battery Capacity (mAh):5000
    Battery Chemistry:Li-Ion
    Battery Voltage:3.6
    Battery Terminal Type:Button Top
    Battery Shelf Life:3 Years
    Product Certifications:CE, RoHS
    Packaging:Retail Packaging
    Warranty:Battery Junction 30-Day Warranty
    Return Policy:Battery Junction Return Policy
    Product Weight:2.55oz
    Country of Origin:China
    8 Reviews
    88% (7)
    0% (0)
    13% (1)
    0% (0)
    0% (0)
    By Darin
    Wow! Great power and runtime.
    February 15, 2022
    I have ordered several of these batteries for my Nitecore MH12-S flashlight and was blown away with the power and runtime. The Nitecore NL2150 21700 5000mAh 3.6V Batteries are just perfect for the job. I keep several as backups ready to go for quick change out even though I can charge the light directly, I don't. I do use a charger for the batteries. Nice to have options though. These batteries are a great example of another quality made item from Nitecore and give great piece of mind that you won't be left in the dark when you need it most.
    By Rob S.
    Boulder, CO
    Excellent Batteries
    January 27, 2022
    The Nitecore NL2150 is the chosen battery for my high end underwater video lights. They are long lasting and high quality. There really isn't another choice when it comes to adding a backup set of batteries for these particular video lights.
    By Jaye
    Great Battery
    January 7, 2022
    High quality, heavy duty battery. Runs my MH25 very well.
    By Mike L.
    Average output for a high price
    November 5, 2021
    This battery can only handle an 8A continuous output current. Almost any 21700 can do that for less money. I would suggest that users look at the Acebeam 21700 on this site for the same price, but also doubles as a portable charger with it's USB Input/Output port. Moreover, at least it offers a full 20A output current.

    Nitecore is charging double of what they should be for this one...

    By David
    Glenshaw, PA
    Nice Build Quality
    November 10, 2020
    After using my machete to open the package it looked rather nicely made (in China). This is a 5000mAh cell rated at 8A, the minimum required for the Nitecore MH12S I also bought. This is a protected cell. If you're looking for a nice recharger for these (besides the flashlights built-in one) I recommend the Xtar X2 (extended model). The extended model is a few millimeters longer to handle the protected 21700s extra length. The X2 will do 1A and 2A(single cell only) recharges. Check it out.
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