Great for use with 18650
597367
I got about a 8 months out of this and the switch in the tailcap went out. It's actually not too hard to unscrew and access the PCB it's on, the soldered on switch is definitely what has just flat out worn out. It gets stuck and won't click to on or off easily.

Update:
Anker was nice enough to send me a new one with no real fuss, I was pleased to find that they didn't need the old one back (shipping it wouldn't have been worth the cost/effort).

It's really quite a decent 18650 compatible light for the price, though I do still wish the strobe could be disabled.
2998897
Great flashlight! Smaller than a standard flashlight and has the same brightness. Around 300 lumens. Works great with Panasonic 18650.
4467719
bought this specifically for backpacking but also for use around the house when needed.  it works great!  I bought Welltop 4Pcs 3.7V 18650 5000mah Rechargeable Lithium Battery batteries so I'd have extra (a lot extra) life span.  I don't use the top strap, for me its kind of annoying, but have had no problems at all with it staying in place.
1316368
I think that I really like this.  It will become a 5 star if it holds up well.  The concept is superb.  a charger for my 18650 that will double to charge other devices in a pinch - love it.  it does not feel as substantial as a device i would expect to last for many years - hence the 4 star rating.  But should it perform well over time, this review will grow to 5-stars without a doubt.
2821104
Borrowed a friend's exact charger fire my 18650 batteries and was amazed with the charge time. May order the LCD display version when I get more batteries and money. But the charging lights are helpful also! Gotta go get the box from the mailbox, hope it's all intact. I assume all is well given the great track record.
1433961
This was super easy to wire up and use.  I have it wired up to charge six 18650 in parallel.  Works great.
3087582
Compact, strong clip, VERY BRIGHT and uses 18650's!!  I bought two.  One works well, the other is being returned because (as another reviewer said) I was never sure which one of its five modes it would start up in.
896657
Great charger for your 18650 and other numbered batteries.  While they'll charge AA and AAA batteries, they nipple on the top makes it a little tricky.
1770553
The light is not as bright as I thought. I bought the 18650 charger kit but they do not fit in this flashlight , yet in the description it said they would fit... other wise I light the light... I hope this helps
4173481
I purchased this because I wanted a flashlight/bikelight that had all the advertised features and was compatible with 18650 batteries.

I use it frequently, and love it, both on and off the bike.
2510674
I notice there has been considerable question about these flashlights and what sort of battery the do or do not use.  The product I received, (Two ultrafire flashlights in plain white boxes) DOES INFACT accept and use the dread 18650 battery.  I have attached pictures which highlight the packaging (adequate), the flashlight compared to the traditional ULTRAFIRE flashlight (We were assured they were the real deal based on the packaging.)  The zooming feature is nowhere near the quality in the larger ULTRAFIRE flashlights.

These flashlights were recommended by my good friend Patrick Trantrum, who uses them for Aircraft inspections and raves about them.  In fact, he orders several as he occasionally leaves one inside of the aircraft he inspects, where the rattle around for up to 267,000 miles and when retrieved still work fine.  Rest assured, the 18650 batteries do in fact fit these puppies.

If you need a small inexpensive or disposable flashlight, this is the deal.  It will impress your friends and even comes with an attractive gift box.

First picture is entire package with regular ULTRAFIRE flashlight for comparison.
Second picture is the Big v. Small Ultrafire flashlights
Third pic is comparative photo showing the same 18650 battery fits both.
1719829
If you have flashlights that use 18650 batteries like I do (I have about 7 of them), you can use this case as a charger if you like but I charge mine in a dedicated charger and use this as a battery pack for charging small electronics. Some of the new LED flashlights have a micro-USB charging port so you can either use the pack to 1) increase runtime of the light (I found this useful with night hunting hogs)  2) swap the spent batteries in the light with the charged ones in the case 3) use the pack to charge up the light once more using the USB port. The number of charges you get will depend on the quality and capacity of the 18650 batteries used. The display is nice because it shows the amperage of each port, and shows a bar graph for each of the 4 batteries. With my S5 charging it shows .5A. There is one port which is labelled 1A and one that is labelled 2A for higher current devices.
4176748
I can't comment on the longevity of this, I've only had it for two days. I have had similar items in the past and they never last, so I honestly don't expect this one to last forever.

With that being said, this one fits my protected 18650's with no problem, and for that, it gets 5 starts. Most similar items, it's either a very tight fit or I have to mod them.
170303
These shrink wraps are pretty good.  The length is just right for 18650s with protection circuit; for naked (non-protected)18650s, you'll need to cut it a little shorter.
3968546
Pretty handy.  We are looking for a good chassis to use for reclaimed 18650 cells from old laptop batteries.  We don't get the full 30k as silkscreened on the box as those are for new cells.  The cells we use test out at 2k to 3k mah on the capacity testing we use for reconditioning.  Considering new 18650 cells go for 3 or 4 $USD each, using 8 of them in a charger like this, is not a bad investment.  The interesting thing about this unit is not  the 2A and 1A output - lots have those.  This has a 2A and 1A input.  Which means this pack should be able to recharge as fast as it discharges.  Unfortunately it won't take both inputs at the same time.  I would have loved a 3A recharge.  Also, at 73 percent, the 2A drops to 1A on the input.  This means that your unit will take quite a long time to recharge.  They are still awesome.  You can't get a charge controller, case, and diy charging cradle and do it yourself for less than this.  I'm ordering more, since I needed one to test, and it works great, and we have a mountain of old laptop batteries to strip out.
3508125
This product is by far the best I've found for holding flat-top 18650 batteries.  The plastic case is considerably thicker and stronger than any other I've purchased and feels very sturdy.  The +/- metal connectors are strong and hold their shape well but are also flexible enough to easily add or remove an 18650 battery.  I have no worries that the battery will come loose or lose connection.  Every other type of holder I've attempted to use has been seriously flawed.  The quality of this product is so good that I would recommend them to anyone looking for a well built 18650 battery holder for any DIY project.
491256
If you use vape mods these are a boon. They work great with 18650 Lithium cells. SUPER bright and a great thing to have stashed in the car without a battery in it. If you carry your vape box with you everywhere these can be super handy if you need some illumination.