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About this product
Product Identifiers
BrandNITECORE
MPNNL166
UPC0635983235899
eBay Product ID (ePID)558293379
Product Key Features
Battery Size16340
Chemical CompositionLi-Ion
Voltage3.7 V
TypeRechargeable
Amp Hours2.4WH
Dimensions
Weight0.25lbs.
Ratings and Reviews
Most relevant reviews
- Feb 20, 2019
Great for Smith & Wesson flashlight
I bought these rechargeable batteries for my husband's flashlight.His flashlight is essential at work specially when working graveyard.His Smith & Wesson flashlight uses two Energizer batteries 123 (3.0V) but these are the perfect replacement. They last a super long time. He hasn't recharged them in 3 weeks. I already bought him another set as a back up!Verified purchase: YesCondition: New
- Oct 18, 2017
Good Higher Quality Batteries
I searched for a good set of batteries that won't fail in a short time, hence I went with a brand name like Nitecore. While some may ask how do I know Nitecore is good, well they have a reputation to uphold rather than some unknown company that you know nothing about, so I based by decision on that alone. Time will tell, but I am more confident with these than the unknown brands.Verified purchase: YesCondition: New
- Nov 27, 2018
Great idea for upgrade
I purchased these RCR123A rechargeable lithium ion batteries to upgrade a high end flashlight with expensive non rechargeable lithium batteries to an extremely nice flashlight with the best thing going. The light is just as bright as it was now and I can use it as much as i want daily without getting upset at the cost of keeping expensive, disposable batteries on hand.
Verified purchase: YesCondition: New
- Jul 03, 2022
Nitecore rechargeable batteries
Nitecore rechargeable batteries #16340 NL166 3.8 v make an excellent replacement for any  123A non-chargeable battery , works very well .Have been using them for years in 500 to 2100 lumen flashlightsVerified purchase: YesCondition: New
- Aug 24, 2025
Charged right up. Brand new. Good batter...
Charged right up. Brand new. Good battery. Thanks!Verified purchase: YesCondition: New
- Dec 30, 2015
Nitecore 16340 650mah Battery
I received 4 batteries and put them through the test. I have an Opus BT-C3100 Charger, Rev V2.2. I ran them through the charge - Test mode to see what the actual mah was. I was pleased when all 4 rated higher than listed. 1) 685mah; 2) 713mah; 3) 735mah; 4) 695mah. The usual "Blue" 16340's rated at 1200mah were coming at ~325mah on the high end. Bottom line - Worth the extra money to get the Nitecore. I use these in my weapon mounted light for duty. I will be buying more. Deputy DaveVerified purchase: YesCondition: New
- Oct 26, 2021
The Powerful 3.7v For The Hi Drain Electronic Devices.
I was hesitated at first before purchasing these Nitecore rcr 123a cells. Totally surprised of theirs super bright and their hi drain. My EDC flashlight is really bright after inserting these cells. These 650mAh Nitecore cells are triple the brightness compared to my others 2800mAh cells for Surefire and Nitecore EDC flashlights.
Verified purchase: YesCondition: New
- Apr 10, 2021
The batteries are long lasting. I use them in my flashlight and they work well.
The Batteries operate as advertised.Verified purchase: YesCondition: New
- Jun 18, 2022
Great batteries!
I work as a mechanic, so I really depend upon my lights. These batteries have proven to be fantastic!Verified purchase: YesCondition: New
- Dec 20, 2021
Deceptive packaging or title to ad
The dimensions are NOT the same as a normal 16340. These were purchased based on title showing 16340. They are too short to fit my device properly without some rigging. Have yet to determine if their endurance is any issue.Verified purchase: YesCondition: New
