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WorthTrust 2 x UltraFire 18650 3000mAh 3.7V Rechargeable Battery + Charger

3.7 out of 5 stars 540 customer reviews
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  • - 2 PCS 18650 3.7V 3000mAh Li-ion Rechargeable Battery with a battery charger
  • - Low discharge rate, no memory effect
  • - Over charge and discharge protection
  • - Short-circuit and over current protection & Environment friendly
  • - Widely used on torch, laser pointer, as emergency lighting and other portable devices
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$4.89 + $1.00 shipping In Stock. Ships from and sold by Shien.

Frequently Bought Together

  • WorthTrust 2 x UltraFire 18650 3000mAh 3.7V Rechargeable Battery + Charger
  • +
  • UltraFire WF502B Flashlight CREE XM-L T6 LED 3 Output Run on 18650 3.7v Battery NOT Included
Total price: $14.59
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Technical Details

Size: only Batteries | Color: other
  • Brand Name: Ultrafire
  • Model Number: 18650L
  • Item Package Quantity: 1

Product Description

Size: only Batteries | Color: other

INFORMATION - 2 PCS 18650 3.7V 3000mAh Li-ion Rechargeable Battery- Low discharge rate, no memory effect- Over charge and discharge protectin- Short-circuit and over current protection & Environment friendly- Widely used on torch, laser pointer, as emergency lighting and other portable devices Specification:Quality: (2pcs )Material: Li-ion BatteryVoltage: 3.7VCapacity: 3000mAhSize: 66x18mm CONTAINS 2 PCS 18650 Rechargeable Battery and a battery charger

Product Information

Size:only Batteries  |  Color:other

Technical Details

Part Number 18650
Item Weight 1.4 ounces
Product Dimensions 0.7 x 0 x 2.6 inches
Item model number 18650L
Batteries 2 Lithium ion batteries required.
Size only Batteries
Color other
Pattern 4Pcs 3600mAh and A Charger
Power Source Rechargeable
Voltage 3.7 volts
Item Package Quantity 1
Usage personal
Batteries Included? No
Batteries Required? No
Battery Cell Type Lithium Ion
Description Pile battery_type_lithium_ion

Additional Information

ASIN B008ASQ2S8
Customer Reviews
3.7 out of 5 stars 540 customer reviews

3.7 out of 5 stars
Best Sellers Rank #16,449 in Home Improvements (See top 100)
Shipping Weight 7.2 ounces (View shipping rates and policies)
Date First Available August 20, 2012

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Size: only BatteriesColor: other
I have tested this battery as pictured in a "1600 lumen" and a "3800 lumen" flashlight, compared alongside Ultrafire batteries several times. They last approximately less than HALF as long as the 3000mAh Ultrafires, and cause flashlights to randomly change modes spontaneously as they discharge.

This lead me to research and find a website with an expert who reviewed a similarly marked blue "5000mAh" battery set and warns not to use these in double cell lights since they discharge at an uneven rate, he says its: "very bad idea to use them in series with high power lights"! For more info and the review (he seems to have done lots of good work here): www dot lygte hyphen info dot dk you will find actual tests for 2012 of over 4 dozen 18650 batteries.

I purchased this battery pictured in the 4 battery plus charger configuration and they are nowhere near 5000mAh as advertised, and the seller's response to this issue was basically "I'm sorry but that's how the factory marked them" and offered to send me more, not refund my money. I'm posting this on the blue battery offers printed "GOOD 18650 5000mAh 3.7V" to warn others: the ones I got are not likely 5000 mAh in TOTAL with 4 together.

*UPDATE: I purchased 3400mAh Orbtronic protected batteries and tested them against these twice, run time of 1hr 21 and 1hr 23 mins vs 18 and 16 mins run of these "5000mAh" batteries in the same flashlight. They are worse than I estimated: 740mAh approximately and after two recharges they are down to running the light for 12 mins = approx 500mAh! 1/10th of advertised!
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Size: only BatteriesColor: other Verified Purchase
Claims "5000 mah", but actually meters out at 2200 mah. Horrible product! Buy anything else! Doesn't maintain 3.7v for even half the battery life! Buy anything but ultrafire. The charger is a joke, it shows fully charged when the battery isnt close to charged. Hopefully they will read this and die of shame, but I doubt it. Im sure the are aware of exactly how inferior and misrepresented their product is, they just dont care.
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Size: only BatteriesColor: other
These are everywhere now. There are literally hundreds of listings on amazon and the bay with these chargers and batteries for sale. UltraFire batteries are primarily made with factory seconds, or used recycled cells from laptop battery packs. Did you ever wonder what happens to that old laptop you discarded as eWaste? Well, they go to China where thousands of Chinese disassemble them and then sell us the old parts back in shiny new labels. I'm not making this up; this is serious business!

This method of "recycling" is underhanded, and down right dangerous. These cell are most likely not from the same batch, or rated the same. They may be close to the end of their life cycle, meaning you may get 1 battery that is good, and another that is weak. What all of this means to you, is your flashlight will not work as long as you expect it to, the cells could overheat during use, or during charging. There have been many reports of fires caused by these types of batteries.

UltraFire does NOT make any batteries over 3000mah, which is a good indication that the UltraFire batteries you are looking at are knock-offs, and are most likely made using lower quality cells than even the real UltraFire batteries. If you disassemble these cells and remove the end caps, you will most likely see evidence of the removed solder tabs that held them in series within the old laptop battery pack.

The charger is another thing altogether, and should not be left unattended at any time. I disassembled mine, and it's a basic, as cheap as they could possibly make it, who cares if it burns someones house down piece of junk like 90% of all generic China made electronics. The box has many regulatory, and safety markings on it, but after looking inside; I know these charger have never seen a safety lab.
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Size: only BatteriesColor: other Verified Purchase
As many other customers noticed, this is solely chines fake product. Nothing even close to marked 5000mah and very short self discharge time. None of brand 18650 may today have capacity above 3000mah and it must be Japan made. The price of brand batteries is around $8 ea. Don't be fulled by low price of the fake ones.
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Size: only BatteriesColor: other
I'm in total agreement with a previous reviewer, that found the mAh rating of these batteries was 1/10 of that listed on the wrapper.

I tested six new "GOOD 18650 5000 mAh 3.7V" batteries, that were removed from shrink wrap, under the following conditions. Each battery was fully charged and measured 4.2 volts, then placed in a tester, with the load current set at 500 mAh. When the voltage reached 3 volts, the test was terminated. The best battery in the lot produced 615 mAh during the test. Most were close to 500 mAh, with the worst being 509 mAh, or roughly 1/10 of the rating on the battery wrapper. Those selling these batteries as capable of 5000 mAh, are committing fraud. I would classify these batteries as junk.
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Size: only BatteriesColor: other Verified Purchase
If you expected a high quality made in the USA product. Don't complain.
This is great for someone on a budget who needs a value for the price product and this delivers that. They aren't going to be the best of the best batteries, but for me, having more batteries that maybe only last 85% as long as a high quality one is better, especially when I can get this many, at a cheaper price.
4 batteries vs 1-2 batteries
They work well, haven't had any issues, and the charger works, it's not an apple product for the hipster who wants a sleek design.

This is a functional kit.
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