+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Reviews & Ratings for Nitecore NL1840HP 4000mAh Rechargeable 18650 Battery — 3 reviews

(3 reviews)
Nitecore NL1840HP 4000mAh Rechargeable 18650 Battery
Nitecore NL1840HP 4000mAh Rechargeable 18650 Battery
$32.81 $23.95 Save 27%
View Product
Write a Review
Compare (0)
1 item has been added
Add at least two items to compare
Show
Sort by
Filter by

Great Battery

by Joe, Verified Owner from IA, United States Written on December 28, 2025
Work perfect for my Rix leap L3R! They work in my scanner and my fenix headlight, I will be buying more!
Would recommend: Yes
Was it helpful to you? Yes | No
Share

Nitecore Batteries are accurately power rated !!

by Jack G., Verified Owner from GA, United States Written on December 2, 2025
4000 mAh Nitecore runs my 850 mw 940 NM Illuminator for 5 hours at full power, so it is properly rated as to battery capacity, which is more than I can say for many battery manufacturers!
Pros:
  • You get what you pay for
Cons:
  • none can see
  • None can see
Best Used for:
  • Heavy draw devices
Would recommend: Yes
Was it helpful to you? Yes | No
Share

Perfect extra battery

by Dale, Verified Owner from ND, United States Written on November 7, 2025
Seems like they have a little bit more life than the stock batteries.
Pros:
  • longer battery life
Cons:
  • Expensive
Would recommend: Yes
Was it helpful to you? Yes | No
Share
There are no reviews that match your criteria. Would you like to review this product?