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Description
NITECORE 4000mAh RECHARGABLE LI-ION 3.7V 18650 BATTERYNITECORE NL1840HP At A Glance Continuous 10A discharge current Can be recharged over 500 times Built in pressure relief valve Nickel plated stainless steel cathode and anode Next Generation 4000mAh Battery From Nitecore's latest battery generation, the NL1840HP stands out with an impressive 4000mAh capacity, making it an excellent choice for high drain devices due to its continuous 10A discharge current. Endowed with Nitecore's hallmark safety
NITECORE NL1840HP At-A-GlanceContinuous 10A discharge current
Can be recharged over 500 times
Built-in pressure relief valve
Nickel-plated stainless steel cathode and anode
Next-Generation 4000mAh Battery
From Nitecore's latest battery generation, the NL1840HP stands out with an impressive 4000mAh capacity, making it an excellent choice for high-drain devices due to its continuous 10A discharge current. Endowed with Nitecore's hallmark safety features and quality engineering, the NL1840HP stands as a testament to the brand's reputation as a reliable source of rechargeable Li-ion batteries.
Premium Build with Safety Features
The NL1840HP incorporates a built-in intelligent protective circuit and a pressure relief valve, safeguarding it against overcharging, over-discharging, and short circuits. Crafted with top-tier materials, such as nickel-plated stainless steel protectors that fortify it against impacts, ensure efficient conductivity, and fend off oxidation, the battery is further coated with a durable metallic film, bolstering its resilience against abrasion. Notably, it can undergo more than 500 complete recharge cycles, making it both cost-effective and environmentally friendly.
TECHNICAL SPECIFICATIONS
IP Rating IPX6
Capacity 4000mAh 3.6V (14.4Wh)
Diameter 0.73"±0.01" (18.6mm±0.3mm)
Length 2.75"±0.01" (69.8mm±0.3mm)
Weight 1.76 oz
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Cooling Blanket for Hot Sleepers, Soft Lightweight Comfort with a Cool-to-the-Touch Feel
This reversible cooling blanket is a great option for anyone who sleeps warm. It’s incredibly soft, very lightweight, and has that instantly cool-to-the-touch feel that makes it especially comfortable for hot sleepers.
What I liked most is how airy and breathable it feels without being heavy or stuffy. It’s comfortable enough to use all night and gives that nice cooling sensation when you first pull it over you. The softness also makes it feel cozy without sacrificing the lightweight design.
My only real wish is that it came with a matching pillowcase, because that would make it feel even more complete as a sleep set.
Pros:
Extremely soft and comfortable
Cool to the touch
Lightweight and airy feel
Great for hot sleepers
Breathable without feeling heavy
Cons:
Does not include a matching pillowcase
Verdict:
If you tend to sleep hot, this is a really nice lightweight cooling blanket. It’s soft, breathable, and comfortable with a refreshing cool feel. I just wish it included a pillowcase to make the set feel complete
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Reviewed in the United States on April 4, 2026
★★★★★ 4
Cool & comfy
Color: Dark Gray Seersucker, Size: King(108"x90")
Cool but not as cold as I wanted
Very soft and comfy though
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Reviewed in the United States on April 29, 2026
★★★★★ 5
Cooling Blanket is a sleep saver for me!
This is the second product I have used from bedsmile and as with the other one, this is a great product! It truly is a cooling blanket. I am a very hot sleeper and live in a hot, humid climate, so this has been a sleep saver for me! One side is silky smooth and feels so good on your skin. The other side has a texture to it which is great if you want to use it as your only bedding, which I do. It covers well and hangs over the edges as it should. I ordered the white one and it is bright and unblemished. The silky side magically feels much cooler than typical bedding and keeps me cooler during the night. It is lightweight but heavy enough to make you feel that you are "under the covers". In my opinion, putting additional covers over it would defeat the purpose but if you live in a cooler climate, it would still be beneficial to use this blanket as the silky coolness would help get a good night's sleep anywhere. Another great benefit of this product is that it does not have any strange odors when unpacking. I did wash it before using, but honestly, I am not sure it was necessary.
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Reviewed in the United States on March 20, 2026
★★★★★ 5
Incredible Value - Soft, Stays in Place, and Military Son Approved!
Size: California King, Size: California King
I purchased this mattress topper for under $27 and I'm so impressed that I'm planning to buy another one!
Easy Installation & Perfect Fit:
This topper was incredibly easy to put on, and it fits my California King mattress perfectly. The 18-inch deep pockets ensure it stays in place - I can move around on the bed and it doesn't shift at all.
Comfort:
The topper is wonderfully soft and has made a noticeable difference in our sleep quality. My husband absolutely loves it, and we both wake up feeling more rested.
The Ultimate Test:
My son recently came home after being deployed for a year. He slept on our bed for hours and immediately commented on how soft and comfortable it was. That's saying something for someone who's been sleeping on military accommodations! He was so impressed that he's planning to buy one for his ship.
Bottom Line:
For the price, comfort, and quality, I recommend this 100%. It's hypoallergenic, stays in place, and has exceeded all our expectations. You can't go wrong with this purchase!
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Reviewed in the United States on November 5, 2025
★★★★★ 5
Nice mattress Topper Pad
Size: Queen
Met my expectations and was just as advertised. Good fit; comfortable.
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Reviewed in the United States on April 20, 2026