18650 Smart Battery Charger 4Bay, Smart Rechargeable Battery Charger 4 Slot Fast Charging for Batteries Li-ion Batteries (New 4Bay not Batteries)

Perfect for what I needed. I use a high intensity flashlight at work 2,000 lumens and it drains the battery like no joke (I use it a lot). I got this charger with the batteries so I can just change them out quickly instead of charging the flashlight. So far so good. It charges pretty quickly...usually less than 2 hours if I need full charge. But, I have plenty of spare batteries so no issue.

I have around 12 18650 batteries for a few different hand held flash lights, fans, and head lamps and I only have one charger! Some of the devices can charge directly from the device but these take up a lot of space! So getting this was a space and time saver!This charger is a lot faster than my single charger and faster than charger the flashlight directly! This multi battery charger also does not get as warm as my single charger! It does have a very faint buzzing sounds to it but it's nothing that would bother me!

Make no mistake, I am not impressed with lithium battery technology, but some path lights that I have utilize this technology. I only wanted a very basic battery charger for the days that were cloudy and wanted the batteries charged as they somewhat serve as security lighting at night. The charge time is extremely reasonable for 18500 batteries. I give it a 5-star rating, but I'm kind of getting disappointed that many devices are leaning towards a USB power source. Beyond that, if you're not looking for special gizmos like reconditioning and progress of how far along a battery is charging then this is a perfect choice.

Great inexpensive charger for my vape batteries. Will charge over night, generally 6-8hrs depending on mah of the batteries used. The only drawback I have found is an irritating hum that it emits when the batteries reach full charge. I simply remove them and unplug it after I’m done, but all in all I can live with it for the price point.

We have a few headlights and flashlights that take a 18650 rechargeable battery. This charger is great to always have charged batteries on hand. I can now charge 4 batteries at a time which is great when camping and also if you live in the woods. Very pleased with this product.

Thrse are a new type and size of rechargeable batteries. They are larger than AA (both length and diameter) and dre only rechargeable, so you need a new battery charger that accepts this format. I have several flashlights that use 3 AAA batteries in a cartridge side-by-side, and this ine replaces the 3. No cartridge needed, but you need a plastic sleeve for one if these batteries to increase thickness and keep it from moving around in the flashlight. Some items are designed specifically to use this bdttery, so no sleeve needed.

Those 3.7 V batteries usually come with their own little two-slot chargers. I had several of those, as I use a lot of batteries, and all had issues. One had a burned out LED, so I didn’t know if it was charging or not. Another was showing batteries as fully charged while they were fully discharged, and so on.This device works well without those issues. I am very happy with it.

I had ordered a laser that used 18650 batteries an i did not have a charger. This one was just what I needed, it is capable of using different sizes of batteries as long as they are the same voltage