3.7V Battery Case 4Pack Set, 3400mAh Battery for Flashlights, Headlights, Fans, Digital Cameras, Toys, Radios, Speakers, Surveillance Equipment, etc.

I’ve been using these kinds of batteries in my vape for years and have been though many. A lot of other batteries you lose wattage in the draw when the battery is down one level, and have to change them a times a day. These maintain consistent power even when the level begins to drop, so I can get a couple days usually out of one use.

I like to 3D print stuff and started making night lights with hidden capacitive touch switches in the top. These cells are so common that there are lots of cheap holders, charger boards and other accessories that go with them. I've used two of the four so far and they seem great. I haven't done capacity checks on them because they keep the LEDs in my projects lit for over 8 hours and I stopped testing beyond that.

Delivered as promised. All 4 of the batteries arrived partially charged at about 35-40%, per my digital MIEKLALE 8+2 charger. All 4 batteries were fully charged within about 3 hours. Will follow up with more reviews, as I can get some discharge / charge cycles on them. Please note that the cathode (+) end is not "proud", so make sure your hardware and charger are compatible.

Been using these for a few months, works well in the device I bought it for. Depending on the intended use, dimensions could be an issue. The product description says it's 70mm long, it is not, it's actually 65mm. This can be important, the two most common lengths are 65mm or 68mm. I have a flashlight that is designed to use a 68mm version of the 18650, this battery won't work in that device. If length isn't critical, the battery performs well.

Good quality. Great value!

These are not 3400mAh, but they are 320mAh'ish. I use these to power my dual 18650 vape box mod. When they get low enough the mod box will stop me from over draining them. Afterwards they go on my EBL digital read out 4 bay charger. the first few times they charged to just over 3000mAh. After having used them every day they now (from the box mod preset cut off point) charge to 3200mAh and the most has been 3265mAh. These work just as well as my old LG HE2(??) Samsung 3000mAh and all the best batteries for high drain devices like vape mods. I get a full days' worth of vaping out of them, and I vape all day every day and these are just as good as any brand I've ever purchased. They fudge the weight too. I have a .001-gram jewelers scale that I use to mix my own juice and they weigh 45.375, The other e2 are in use but that gives you an idea of the weight. Which is on par with the much more expensive batteries that I was unable to find at a price I was willing to pay. For the price of 2 LG HE2's that are 3000mAh or so new you can get 4 of these in a better than average carry case. I'll post pics next time I charge them from empty and I'll even pop them in a flashlight for a few minutes, so they get as close to dead (for good dead) as possible prior to charging and post pics of the read out. I've purchased 2 more sets of 4 so I could have all new batteries for all my devices. I'm not sure when I bought the 1st 4 pack but today is 2-1-25 and they show no signs of getting weak.

The batteries have been great. I have not tested voltage but based on the amount of time they last running multiple servos, they appear to be what they say. My only complaint and the reason for 3 stars is the lack of durability of the wrapping material on the batteries. After installing and removing them less than 10 times the wrapping is coming off on one end of one of the batteries and I feel the rest aren't far behind.

These are the best (18650) batteries I have ever purchased.!

Muy buen producto, en las pruebas no entrega los 3400mAh pero se acerca mucho.

Muy buena batería,la uso en un vape, y me aguanta todo el día,y se ven de muy buena calidad,definitivamente las voy a volver a comprar.

Realicé un test de carga para verificar los mah que sostienen las pilas y el resultado fue de casi 3000 mah creo que está bien y que pueda aguantar picos hasta de 3500 mah de esto doy resultados en fotos EXCELENTE

BUENO

Las uso para vapear en dos equipos diferentes y funcionan perfectamente bien y duran todo el dia