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.

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'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.

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.

lasted 74 days with actual usage 4 times first month twice 2nd month. ( November ) Once, this December 30th.That's 7 charges ! ! The charger. went mental this last time ,,,blew up 3. AAA 1.5. volts batteries, almost set my rug on fire! Learned a lesson -place chargers on bathroom tiles away from anything that can burn!!When started this last time in about 30 + minutes 2 batteries went acidy pouring out battery acid ..the last battery ,a AAA recharable. blew out of the. the charger, spit a big black ball of battery carbon on my rug. if I was not there ,no doubt this could have been a real to life rug fire!Do not buy this Charger!!!! ,,It worked. excellently ,,very well ,until now. used it to recharge an EBL alkaline rechargeable AAA 1.5..went nuts with out any warning !!!I gave this MIboxer an excellent review.. worse ,I was recharging just 6 of. these at once!! Worked very well ,, this was the second recharge of these ,& batteries.!!Problem is 2 fold ,--charger keeps no history or records ,and gives no hint of anything about encountering a problem!Do not buy as its a real fire hazard!! Maybe the batteries are at fault. but there isno hints any problem while charging --while other chargers now. announce on the panel any or most problem areas!! Amazon will use the cop out its over 30 days. ..butAmazon in my state has several ware houses .. most likely I can get a court hearing or dept of consumer protection hearing.Amazon used to. be consumer friendly .,now ,the Amazon Bot parrots,30 days. !! 30 days!! Idea ,,!!!!--fire hazzard--yes!! True!! in the mean time--think twice before buying !MIBOXER -++customer service emailed ,,we worked out a credit to my account. Miboxer. spent some time with me showing how to use MODE efficiently . That was the problem. Suggest when charging batteries , do one. Brand at a time can be different sizes as long as the types are close to each other. I.E both AA batteries on left side 3 AAA in middle of charger ,type C to the right, no nicads or Brand. X charged at this charging. this time. . Set the mode this way. Thanks ,,MI Boxer staff!!

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

I have used rechargeable batteries for 20+ years and this is, by far, the best charger I have ever purchased. The UI is super straightforward and it provided all the information I could hope for. Within several hours of receiving this, I had topped up the charge on all my spare batteries (30+ batteries). Some of these batteries seemed to be unchargeable on my old charger and charged up just fine on the MiBOXER. It has an auto off to avoid over charging batteries. Very happy with this product!