MiBOXER 18650 Battery Charger, 8-Bay Smart Charger with Automatic LCD Display, Fast Charge Rechargeable Li-ion LiFePO4 Ni-MH Ni-Cd AA AAA C 21700 26650 13650 16340 18350 18700 RCR123

It does everything it says on the tin. I have tried LiIon cells and NiMH cells. It correctly identifies them and charges them with reasonable voltage/current profiles. Selecting 4.20V stops when battery is charged enough to last its rated cycle life. It also has 4.35V option which reduces cycle life 90% (eg, 1000 to 100) with a little more short term capacity (10-15%). For most people this small runtime improvement isn't worth the rapid aging.Pros:- Identifies Lithium and NiMH/NiCd automagically.- Can charge 6 slots with 1A, or all 8 with 0.8A, so the input power supply is powerful enough.- Can charge "protected" and "unprotected" lithium batteries.- Each slot is independent. Can insert, remove batteries at any time, and mix chemistries (lithium and NiMH/NiCd) on a slot by slot basis.Cons:- Does not identify LiFe cells correctly (its documented). Need to manually use the Mode button to select LiFe to avoid serious overcharge. I don't have any cells to try.- Somewhat hard to seat AAA NiMH batteries. AA seat easily.If they make another version, the following features wouldn't require more hardware (like a heater/fan for autodischarge capacity test):- Allow max voltage to be edited, or have a 3.8V preset for charging batteries for storage (it only lets the current get edited).- Leave the backlight on when its actively charging not just a few seconds after inserting a battery or pressing a button.

I was pleasantly surprised by this battery charger. It displays the internal resistance of the cells that it is charging, and it is customizable for the charge rate. It seems like decent quality for the cost.

I'm all-in on rechargeable batteries. I use AA, AAA, 18650 and 21700 formats in radios, a weather stations, flashlights, trail cameras, remote controls, clocks and who knows what else. Over the years I accumulated a box of chargers for the different formats. Some chargers did more than others, but none of them could handle everything, and I had to charge batteries in batches for the trail camera that used 8 AA.My old 18650 charger generated terrible radio noise that ruined receiving all over the house, so I could only use it certain times.This MiBOXER charger solves all my problems. First, it handles all the batteries I use. Second, it handles 8 at a time so I don't have to use multiple chargers and find a place to plug them in. I can mix any combination of battery types.All of that just gets the job done without causing problems. There's more. When you put a battery in, it estimates the charge level for you, so basically it's a charge level meter. And finally, it records how much energy it adds to the battery. With this you can find out the actual capacity of the battery which is particularly useful for 18650 batteries, where there are so many fakes out there.It solves all my battery charging needs.

Very happy with the quality and versatility of the MiBOXER 18650 charger. Was using separate chargers previously for AA & AA batteries, 18650 and 18350 batteries. Great to have a single charger handle all of them and do it automatically. Having 8 charging slots is a big deal for me as I use a LOT of rechargeable batteries and being able to charge up to 8 at a time is very convenient.Recommended and would buy again.

I receive this the other day, so far it works great for all my batteries including CR123's. The manual (of course) lost something in translation. It's sufficient but some of the features that it (susposedly) can do aren't clearly addressed.The other thing, it states it will show a batteries capacity, but my 9900mah show 700 (which I believe is how much they took on a partial charge). Overall, I am satisfied, put batterin, it charges, flashlight works, done deal.

Best charger I have ever owned. Tells you everything you need to know about the battery. A+

Does a very good job of charging any type of battery.

this has to be the best charger for nimh cells, as well as for lithium cells I have ever used. it shows the internal resistance of the cell, as well as the total energy returned to the cell, giving you a very good indication of the overall health of the cell. it also has reverse polarity and short circuit protection, which is a must. these features combined with the fact that it charges both lithium and nimh cells simultaniously(obviously in different slots) is a complete game changer for me. I believe that everyone starting to get into 18650 or similar lithium cells should have one or more of these. my only problem, although it pales in comparison to the good qualities of this charger, is that it does not have a discharge function. I have to manually discharge my cells.