MiBOXER 18650 Battery Charger, Smart Universal 4-Bay Charger, Automatic LCD Display,Fast Charging Rechargeable Li-ion LiFePO4 Ni-MH Ni-Cd AA AAA C 18350 18500 18700 20700 21700 26650 RCR123

This review is the MiBoxer C4 Smart Charger (Version 4) with Capacity measurement (only 4th slot).I was able to fully charge two Lithium Ion 26650 batteries to 4.2V, one AA Ni/MH (Nickel–metal hydride battery) to 1.4V and one Lithium Ion 18650 battery to 4.2V in the available 4 slots at the same time.Excellent heat dissipation. All of the batteries were slightly warm and not hot during charging as the charger auto sets the charging current according to the characteristics of the battery. Also you can manually set the charging current from 0.1A min to 1.5A max base on battery type.Auto stops charging when fully charged.This unit measures actual battery capacity (mAh) in the 4 slot.To accomplish this task, insert a battery into slot #4. Press "slot" and “mode” button at the same time until the “timer counter” on the right hand side is showing “0000mAh” is flashing. At that point, press and hold the “mode” button and release, then quick press "mode" button again. This should activate three small “arrow icons” on top of the battery capacity icon. One of the “down” arrows should be flashing. If it is, that means it’s charging the battery. The "down" arrow will switch to the "up" arrow when the charge is complete, and it begins its DISCHARGE cycle (down arrow). It will continue until finished, at which time the capacity of the battery will be shown. And then the charger unit will fully recharge the battery again.I'm glad I bought the MiBoxer C4 Smart Charger (Version 4) which works as advertised and is a very good value.Highly recommend for its quality build, features and performance.

This is a very good charger for the battery types that it is listed for. My old charger (a Lii-300) was having a problem with it's charge voltage. So i purchased the Miboxer with the understanding that they have a highly accurate charge voltage. Sure enough, when I tested the voltage with my Fluke meter, the voltage was spot on.The other things that I like about the charger are the large , easy to read LCD screen, and how easy it is to use. If you want to simply charge a battery without a lot of fuss, just pop the battery in and let the charger do its thing. It probably will take longer to charge in the auto mode, but battery should be safe from an overcharge.Overall the Miboxer C4 offers a lot of features for the price. It seems to be well built and quite functional.

Received this so I had something to charge my new 21700 cells with. I was replacing my old dual bay EFest LUC charger which had also recently started going on the fritz.This charger has a brilliant large, bright screen that readily displays all the pertinent information. It fits both my 18650 and 21700 cells with more than enough room. It fits the very large 21700s very comfortably which my other charger did not do. I love that it displays the current mAh of the charging cells. It charges very quickly at 1.0A at least compared to my old and heavily used one.It also gives you the ability to change the amperage between 0.1A and 1.5A. I typically charge at 0.5 or 1.0A in a hurry. I read that this charger can go as high as 3A but I haven't seen it and I have no desire for that anyway.My only complaint is the cord is quite short at around 3 feet(?), again compared to my old charger, but luckily my outlet is near my nightstand where it stays. I've just received this item, but so far I am very impressed especially given the price compared to many of the competitors. The build quality is fantastic and it is very roomy. I purchased it after reading positive comments about it on Reddit and another message board. I will update my review if anything changes. 5/5

This is a great charger for Lion and lipo4 type of battery. Packed with a lot of features that I liked - fast charging, individual battery bank that can charge different types of batteries. Compared with other chargers I owned - Tenergy and Nitecore this one is much better in terms of performance and features. However, it still has other areas that I wish it could improve so it could be a perfect charger.1. When charging Lion battery to 100%, it measured to 4.15v instead of 4.20. This is better than other brands which charge only to 4.10.2. When charging 26650 batteries, I can only charge maximum with 3 slots instead of all 4, because the space is not wide enough.3. When charging, the LCD panel is not lid up like others, I have to push a button just to see the black light display.4. Charger came with a 12v port, intended to charge in vehicle, however no car charger is provided.

Does what it says but taking 1 star off due to the complexity of using it and the crap instructions.