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Tenergy 2-Channel 18650/14500 Li-ion Battery Charger and 2 Li-ion 18650 Cylindrical 3.7V 2600mAh Rechargeable Batteries-Button Top with PCB

4.3 out of 5 stars 111 customer reviews
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Price: $29.99 & FREE Shipping on orders over $49. Details
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  • Two independent charging channels for individual charging and detection
  • Constant current and constant voltage charging mode
  • Reverse polarity protection. It automatically terminates charging and the LED flashes red when the polarity is reversely connected
  • Li-Ion 18650 cylindrical rechargeable batteries with Internal Voltage protection PCB!
  • Internal PCB protection prevents under-voltage at 2.5V and over-voltage at 4.25V.
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$29.99 & FREE Shipping on orders over $49. Details In Stock. Sold by Battery Superstore and Fulfilled by Amazon.

Frequently Bought Together

  • Tenergy 2-Channel 18650/14500 Li-ion Battery Charger and 2 Li-ion 18650 Cylindrical 3.7V 2600mAh Rechargeable Batteries-Button Top with PCB
  • +
  • Terralux TT5R-EX Tactical Flashlight
Total price: $129.98
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Product Description

Specifications * Worldwide voltage for 100-240V AC * Input: DC 12V 1000mA * Output: DC 4.2V 1000mA per channel * Applicable battery type: 18650/14500 rechargeable Li-ion battery Warning * Don't disassemble the charger * Don't charge other types of battery. It may cause explosion and breakage * The charger is only for in-house using and should be kept away from heat surrounding * Keep the charger away from humidity circumstances and no liquid is allowed to get in, otherwise it may cause damage and lead to accident * It should be placed out of children's reach * It may not be able to fully charge those batteries which have not been used for a long time. Several recycles of charge-discharge will improve the battery's performance * Please carefully read the instruction before using! Battery Features and Benefits * Higher energy density and lower weight than other rechargeable batteries * Manufactured under ISO9001-2000 to assure quality * Battery tested based on International Electrotechnical Commission (IEC) standard to ensure capacity, quality and life time Product Specifications * Capacity* Nominal 2600 mAh, Minimum 2500 mAh * Internal PCB protection prevents under-voltage at 2.5V and over-voltage at 4.35V. UNIQUE INTERNAL PCB! * Dimensions: Diameter: 19 mm Height: 69.5 mm * Weight (Typical) Approx. 50 g * Nominal Voltage: Average 3.7V * Discharge Voltage: 3.0V * Internal Impedance: less or equal to 130 milliohm (with PTC) * Cycle Performance: 90% of initial capacity at 400 cycles * Cycle life: > 500 cycles * Standard Charge Current: 0.2C (Cut-off Current: 0.01C) * Fast Charge Current: 0.5C (Cut-off Current: 0.01C) * Standard Discharge Current: 0.5C (End Voltage = 2.75V) * Max. Discharge Current: 1.5C

Product Information

Product Dimensions 2.4 x 4.1 x 1.3 inches
Item Weight 2.7 ounces
Shipping Weight 12 ounces (View shipping rates and policies)
ASIN B004FOUNWW
Item model number 39159
Customer Reviews
4.3 out of 5 stars 111 customer reviews

4.3 out of 5 stars
Best Sellers Rank #49 in Electronics > Accessories & Supplies > Batteries, Chargers & Accessories > Household Batteries > 3.7V
Date first available at Amazon.com December 9, 2010

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Customer Reviews

Top Customer Reviews

By Joe Blow on November 28, 2011
Verified Purchase
These provide tons of power for my (overpriced) flashlight. Makes it seem almost worth the price I paid. I haven't cycled the batteries very many times yet, but so far they are charging very well, and fairly quickly.

I've left my original review above, but now the conclusion is much different. After using these batteries for less than a year they have completely failed. So the price is quite high and they work great for a while, but fairly quickly they reach a state where they no longer take a charge. I charged and then discharged the batteries perhaps every 2-3 months. I'm not sure if this is the prescribed usage pattern, but it seems like a usage pattern that would be fairly common for a flashlight.
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I know this stuff is all made in China but some companies have way better QC- this is defintely one of those. Way better then Trustfire. This unit is smaller and better built, highly recommended for use with 18650 batteries.
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I ordered this product for my Fenix TA20 Flashlight and let me tell you it is a really great product. The charger is very well made and the batteries hold their charge really well. It was a great value for the price. I would highly recommend this to anyone that requires rechargeable batteries for their flashlights. The company delivered right on time and in excellent condition.
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I'm using this battery for a bike light I purchased that requires 18650 batteries, and on first pass you can see Amazon has quite a few choices, most of which end in"fire". After some extension research on reviews it seems that most of the fire batteries are of lower quality with mixed reviews on the batteries differing in size and mislabeling their MAH power output. For double the cost I decided to go with Tenergy which seems to have a reasonable MAH rating and clear reviews, and I wanted to add my experience to this.

Out of the box they feel like batteries, which I guess compared to the other reviews is a good thing. They are not charged and will require you to load them into the handy Tenergy charger which feels solid and well built, a major reason I bought this. Another reason I selected these batteries at the higher price is that some of the "fire" reviews where mentioning 6 hour plus charging times and inconsistent chargers. I'm not about put energy into a battery and leave it overnight if I'm not sure of the safety or build quality of the charger or battery.

For me it took about two and a half hours to go from the red indicator to the green fully charged indicator. The batteries loaded into my bike light seamlessly an powered such a high powered light that it is almost absurd. But if your riding at night in the dark you want awareness, and my light gives me that.

I'll update my review later on how long they last, but so far so good. I have to take out the batteries every ride because I live in Arizona and I fear that there may be problems with 108 degree heat and an exposed battery.

Overall, so far a great buy.
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Verified Purchase
i used this battery in fenix flash light tk15, so i got these for a few years now and it still works great.. hold good energy.. i charge these battery like twice and still has a charge.. the flashlight is still nice bright with these batteries in it. i just recently use them during Halloween (2015) i recommend.
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Verified Purchase
Tenergy has always provided the highest in quality and performance with their batteries. I can now say that all my airsoft AEGs and flashlight accessories are powered by them. Great buy, and well worth the two batteries and smart charger.
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Verified Purchase
Good charger with 2 batteries. The charger is relatively fast with 2 independent channels meaning you can charge one battery at a time if need be. The Tenergy 18650 Li-ion batteries are high quality high capacity rechargable cells. Good battery life with plenty of power. Best performing affordable protected 18650 batteries available. The batteries are button top which you need to use in flashlight. Be aware there are cheaper knockoffs and chinese brands out there that are not worth it. Good value!
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Verified Purchase
Bought this Li-ion battery and charger for use in a dive light which can blow through regular batteries in a hurry. Very satisfied with the purchase. At first I thought the batteries and charger a little heavy for a travel situation but it all balances out I think. Batteries gave good long power to the light which is most important thing.
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