I've ordered 3 of these, now. One is my go to travel charger, as it's really only a little bigger than 2 of the cheap double cell travel chargers but offers much more versatility and safety from overcharging. The other two were ordered for friends. At home, I use the more expensive Nitecore Intellicharger d4, with it's fancier LCD display, but for travel, the 3 LEDs, that give me a general idea of charging status, on this i4 model, are more than adequate and less likely to be damaged in my haphazardly packed carry on bag. Functionally, I can't see any real difference between these two models of 4 cell chargers, but they both share the single same drawback, which is that you can't fit two 26650 sized batteries in adjacent slots, and you may even have trouble fitting one in either of the outboard slots, because they've chosen to add a little plastic outer rail extension that gets in the way.
I've been using this for more than a year now and it;s still working like the day I bought it. This is my go to for 18650 batteries.
Good item, the seller had a quick response to my doubts and shipping arrived within the timeframe established.
I bought this specifically to charge 4 x 26650 batteries at once. I says 26650 "compatible". It may be electrically compatible, but you simply cannot fit more than two of the 26650 batteries in this charger at once, since you simply cannot fit two 26650 cells in adjacent slots.
Further, in the slots on each edge (slots 1 and 4), the 26650 cells sit slightly crooked because of the case edges.
further disappointing is the fact that the positive terminals are flush with the case plastic so the wider "button top" on the top (positive terminal) of some protected cells has a hard time making contact.
Bottom line: it just wasn't designed for 26650 cells and you can't charge four at a time. Even charging two at time takes some fiddling, to get the contacts connected right.
If that weren't disappointing enough, one of my "Marsfire" cells causes the charger to enter an error mode, were all lights flash, and the unit must be unplugged for about 10 seconds to clear this error state. That cell may very well be defective, but can't the charger be designed to just signal failure on the one slot? It is annoying to have to completely un-plug the charger to resolve this.
After using many multiple 18650 chargers, I finally decided to purchase this charger. Why? Well apart from the dozens of very positive reviews of this device, I also needed a charger that can charge 4 18650s safely.
The charger comes in a nice retail box, and comes with a instruction manual and power cord. It can be powered off DC and AC, and works on all standard AC voltages.
Charging batteries with this cannot be more simple. No more worrying about charging batteries overnight, the charging will stop once the batteries reach 4.23v. The 3 power level indicators for each battery gives you a rough estimation of the battery levels.
This charger is the best one that I have ever used. It goes well with the Skyray King, as that requires 4 18650s.
This charger with it's ability to charge Lithium of different sizes is a great charger. It comes with an AC and DC charging plug/cord so you can charge at home or on the go. I purchased two, one for the car and one for the home.
This is a great charger, works as designed and expected, I use it to charge 18650 batteries and it does a great job!
I have dragged it to Africa and Europe despite its large size and charged 18650/14500 Li-ion and Ni-MH Eneloop AAA. Works great everytime and seems to keep batteries charged just fine. I'd get the 2-cell model except I often need to charge 3 or 4 cells at a time overnight when traveling and I don't want to wake up just to change the batteries in the charger.