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Nicole Fitz
Reviewed in the United States on February 24, 2025
Works exactly like it should! Charges the batteries well and so far no major issues. It is much lighter than my old one which is nice too. The batteries work great. Definitely would recommend.
David R.
Reviewed in the United States on February 22, 2025
Okay, so I'm not a huge fan of the flat top 18650s unless your device requires them. However, I decided to try these in my flashlights, and they worked perfectly. It's only been a week, so I can't comment on their longevity, but they perform as well as the brand name batteries my lights came with. Matter of fact, I'm sort of impressed with how long they are lasting on high beam setting.18650s seem to all run well when new and if these start dying at an early age, I'll update this review, but so far so good.
Grant
Reviewed in the United States on February 14, 2025
I tried the batteries in a couple of different flashlights and they work fine. The listed capacity (3,000 mAh) appears to be accurate while many other batteries exaggerate their capacities (see update below).I don't know why the charger has a USB plug rather than a regular outlet plug. What would you plug it into instead of an electrical outlet? The product images show it plugging into a computer or power bank but that seems like a very unlikely scenario. So you will need an adapter or something with a USB port on it to use the charger.UPDATE: I ended up testing several batteries in a drain test to see if their listed capacities are true. These Tekowee batteries did the second best of any that I tested, lasting 8 hours being on in the flashlights that I used.Here were all of the ones that I tested and how long each lasted, still producing a bright light:Ultrafire 2,400 mAh = Ultrafire 6,000 mAh = BENKIA (labeled "GTL Evrefire") 9900 mAh = 2 hoursgeneric 2,000 mAh battery = 4.5 hoursTekowee 3,000 mAh (these) = 8 hoursDQGG 3,500 mAh = 10 hoursI also used the charger several times during the battery testing and it works well. The only improvement would be if it showed the charge level rather than just a red/green status light.
Roesch
Reviewed in the United States on February 13, 2025
This 4-pack of 18650 rechargeable batteries and charger is a fantastic value. I needed replacements for some aging batteries in my flashlights and this set has been perfect. The batteries themselves seem to hold a charge really well and have given my flashlights a noticeable boost in brightness and runtime. The 3000mAh capacity is definitely a plus.The included charger is very convenient. I appreciate the four independent charging slots. Being able to charge each battery individually is much better than chargers that force you to charge in pairs. The red/green indicator lights are clear and easy to understand – red for charging, green for fully charged. The fact that it's USB powered is also a huge plus. I can plug it into a wall adapter, my laptop, or even a portable power bank, making it incredibly versatile.I was also impressed with the safety features. It's reassuring to know there's overcharge protection, short circuit protection, and other safety measures in place. This gives me peace of mind while charging.Overall, this is a great set of batteries and a charger. They work perfectly, are easy to use, and offer good value for the price. I've already used them in my flashlights, headlamps, and even a small fan, and they've performed flawlessly. Highly recommended!
mark
Reviewed in the United States on February 12, 2025
I love 18650 lithium batteries, which pack a strong charge into a single battery that is easy to change and recharge, but I'm well aware that many manufacturers make horridly wild claims as to their capacity, and prices vary wildly and without adequate substantiation. I've no way to judge capacity. Some reviewers have sophisticated test equipment and can do so. I'm only able to measure voltage.Accepting as accurate the claim that these batteries have 3000mAh capacity, I'm quite satisfied with $24 cost of the four batteries with the 4-slot smart charger.No claim is made as to any sort of protection that is built into the batteries. Others that I've purchased have been claimed to have "six types of protection, including temperature, short circuit, overcharge, and over-current protection," which "ensure the battery remains stable and your device stays protected at all times."I have now quite a number of chargers that can charge 18650 lithium batteries, or at least supposedly charge them. A number of them are simple 1-battery chargers, but they at least are claimed to be smart chargers. Another, that I'm very happy with, can charge a variety of batteries, including 18650 batteries, one at a time, with four leds indicating the state of charge. An extremely expensive smart charger that I ordered has a screen display and was supposed to be able to charge many kinds of batteries, including up to four 18650 batteries at a time, but it was an extreme disappointment, refusing to charge new 18650 batteries, while giving an unintelligible error message that I was using an incompatible usb power source. (I tried many usb sources.)This Tekowee charger is outwardly very simple, though it is claimed to provide five types of protection: under voltage, over voltage, over current, over temperature, and short circuit. It conveniently has four batteries slots, each with a single led light, which glows red or green. It works and brings batteries up to 3.7v. That's good enough for me.
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