Welcome back! We saved your shopping cart for you: View Cart

Nitecore NL2150HPi 21700 5000mAh 3.6V i Series Protected Lithium Ion (Li-ion) Button Top Battery

Nitecore NL2150HPi left side angle
Nitecore NL2150HPi left side angle
Click to Enlarge Image
Usually ships the next business day
Battery Junction Wholesale Account Signup
Battery Junction Free Keylight On Purchases Over $20 Promo

Nitecore NL2150HPi 21700 Battery

i Series Battery | 3.6V | 5000mAh Capacity

The Nitecore NL2150HPi is a proprietary 21700 battery designed for use with multiple Nitecore products including the SRT6i, the SRT7i, and the ML21 or MPB21 accessories. This battery has both positive and negative polarities at both ends combined with a super high energy density. This allows the battery to have an efficient output while also minimizing power loss from internal resistance. The NL2150HPi has many internal and external safety features including a built-in protection circuit and a thermal regulating design to keep your battery safe and working in peak condition.


  • Battery Size: 21700
  • Brand: Nitecore
  • Chemistry: Lithium-ion
  • Capacity: 5000mAh
  • Voltage: 3.6V
  • Continuous Discharge Current: 15A Max
  • Dimensions:
    • Length: 3.02"
    • Diameter: 0.86"
  • Weight: 2.66oz
Battery Size:21700
Battery Capacity (mAh):5000
Battery Chemistry:Li-Ion
Battery Voltage:3.6
Battery Terminal Type:Button Top
Packaging:Retail Packaging
Warranty:Battery Junction 30-Day Warranty
Return Policy:Battery Junction Return Policy
Product Weight:2.66oz
Product Dimensions:3.02" (L) x 0.86" (Diameter)
Country of Origin:China
5 Reviews
100% (5)
0% (0)
0% (0)
0% (0)
0% (0)
By Dan
Nitecore NL2150HPi 21700 5000mAh 3.6V i Series Protected Lithium Ion (Li-ion) Button Top Battery $25.95
October 31, 2022
So far I have been very happy with these batteries. The charge seems to do pretty well in my P35i which does draw a wee bit of power at the upper settings. Haven't tried them in my E4K.
By Chris
September 27, 2022
Will work as a backup to my current light

Next time ill order the one with the rechargeable port
By Darin
Very strong battery
July 27, 2022
The Nitecore NL2150HPi 21700 5000mAh battery seems very strong and holds up quite well over time. I bought the P20IX flashlight which came with one of these batteries, but I also purchased a backup battery as well. No complaints about this battery at all. Nitecore has the best flashlights and batteries out there in my opinion.
By L L.
lots of battery-power
December 6, 2021
good investment for 21700 flashlight
By lakeranger20
High Output 21700 Battery
June 18, 2021
This Dual polarity Battery along with the Nitecore P20i Tactical Flashlight is my new GO-2 light system. With 2 extra batterys, i had BuKu light during a 5 day WildFire Deployment in Northern Arizona. Just can't say enough about the build quality of this battery and the P20i.

thanks Nitecore for providing FirstResponders with Quality Products.
Related Items

Nitecore NL2150HPi 21700 5000mAh 3.6V i Series Protected Lithium Ion (Li-ion) Button Top Battery

  • $25.95
  • & Free Shipping On Orders Over $50
  • In Stock