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Tenergy 30049 18650 2600mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Retail Card

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Retail Card Package
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Tenergy 18650

3.7V 2600mAh Li-ion Battery

This high energy density and capacity lithium-ion battery from Tenergy is perfect for flashlights, portable power devices or other devices requiring 3.7 volts. The 3.7 Volt 2600 mAh capacity provides a long lasting, efficient discharge for maximum runtime for your flashlight or other device. The lightweight 18650 cell has been tested by the IEC (International Electrotechnical Commission) standard to ensure capacity, quality, and life span, so there are no surprises. Also, this 18650 has been manufactured under the ISO9001-2000 standard to assure top notch quality. These 18500 supply three times the voltage of 1.2V AA NiMH or NiCd rechargeable batteries. The unique patented PCB design prevents voltages outside of 2.5-4.25 volts

Features and Specifications:
  • PCB protection prevents under-voltage at 2.5V and over-voltage at 4.25V
  • 3.7V 2600 mAh capacity
  • Higher energy density and lower weight than other rechargeable batteries
  • Manufactured under ISO9001-2000
Battery Size:18650
Battery Capacity (mAh):2600
Battery Chemistry:Li-Ion
Battery Voltage:3.7
Battery Terminal Type:Button Top
Battery Shelf Life:3 Years
Packaging:Retail Packaging
Warranty:Battery Junction 30-Day Warranty
Return Policy:Battery Junction Return Policy
Product Weight:1.94oz
Product Dimensions:2.74" (L) x 0.748" (Diameter)
Country of Origin:China
Associated Battery Sizes:168A, 18650, 19670, Protected 18650, Unprotected 18650
7 Reviews
57% (4)
0% (0)
29% (2)
0% (0)
14% (1)
By Carmine
Happy with it's performance
September 1, 2017
I've been using this battery for more than two years and it has proved itself to perform well and be reliable. Have been using under what many would consider extreme conditions - dive light in 50 degree F or lower water
By Dan
The Dalles, OR
Tenergy 30049 18650 2600mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery
June 11, 2017
Of all the batteries I have purchased from Battery Junction, these are the only ones I have had fail. Admittedly, they were charged and stored for sometime, but I have done this with other batteries without issue. As I didn't try them after charging, I can't say whether the batteries were bad from the start, or failed later. Wont do that again! To be fair I bought several of these, and some are still working fine, bu the failure rate was rather high. The price is attractive, but there is a downside
  • Low Price
  • In my experience, a high failure rate.
By B D.
Jasper, AR
March 1, 2015
Great item (so far) and even greater help by your sales staff who helped me select this item.
By Ed
2 of 4 are kaput
December 23, 2014
I purchased 4 batteries and have been using them in several flashlights. I have not used them a lot so I finally decided to charge them (second time). 1 is not charging correctly, and 1 discharges just sitting on the counter. I tried out my new digital nitecore charger with the batteries. Took 3 out for about 4 hours and let it sit. now 1 needs charging. I still have one in the charger at 3 bars (since yesterday), but I have moved it to several slots in case it was an issue with a slot. I broke out my Fenix charger in case there is something going on with the new charger. Going to try that. But hey, good news, 2 our of 4 are fine.
  • the two that charged normally work fine in my different flashlights. Hold a good charge and works for a good amount of time.
  • 50% work, poor odds when purchasing.
By Teena M.
United States
awesome battery
November 26, 2014
fits my gadget and holds a great charge
  • holds a great charge
  • a tiny bit thicker than other batteries this size
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Tenergy 30049 18650 2600mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Retail Card

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