Size:C4 Size:C4 Battery activation C4 charger has an activation function for over discharged Lithium battery. When placed a battery in charging slot, C4 will auto detect the battery & active it. If battery unable to be activated, charger will judge battery is damaged, The charging slot will display "err" And stop charging. Lithium battery restoretion if operate Lithium battery over discharge to 0V, charger will restore battery voltage with small current to make voltage rise slowly to normal condition, when restoration process finish, come to the normal charging mode. If battery voltage cannot rise in a long time, charger will judge battery is damaged, The present charging slot will display "err" And stop charging. automatic stop charging after the battery is fully charged, the LCD screen displays "full", the charger will stop charging automatically to prevent the battery from shortening battery life due to overcharging. high sensitive judgment mode, make sure Ni-MH/Ni-Cd battery real full charging> according to Ni-MH & Ni-Cd battery charging mode, add "-V" Judgement to detect the battery status & judge to stop charging time more accurate, let the Ni-MH and Ni-Cd battery can obtain the maximum charge capacity but not to overcharge.
P**B
best charger i have had yet for my vape needs
fantastic charge, with only one minor annoyance.fits all 18650/20700/21700/26650 batteries i have tried.Annoyanceeverytime you put a battery in you have to tell it what charge current to use.otherwise auto charge kicks in and will use 1.5a which is more than any 18650, most 20700 and 21700 batteries safely accept. long term will damage your batteries.overall, full charge everytime, every slot.i have had all the big name chargers and all ended up getting tossed because they under charge the batteries.yes according to battery mooch undercharging is a good thing, but done properly a good 4.2v charge (not overcharging) is perfectly fine, plus you dont lose any power just because it was undercharged.
D**I
Good product but not what was expected...
I had heard many good reviews of this product and came to know the C4 has a discharge capability on the 4th slot and the C4-12 doesn't have this feature...I bought a C4 and the product shipped also is a C4 but it doesn't have this feature...it seems like they've named the product C4 but the actual product is the C4-12 without the discharge feature...absolutely unethical!
A**R
Easy to use and read
This is the best charger we have tried. It works well with all the batteries we have from AAA to the 18650s. It's easy to get them in and out and very easy to read. You don't have to guess how full the battery is by a bar graph on pic of a battery. It actually gives you a percentage charged.
F**E
Seems to work as expected.
The operator interface is more complex than seems necessary. More switches with dedicated function would be easier. I figured it all out ,but when the little booklet with instructions is gone, I'll probably not be able to use all the functionality. That said, I'm glad I bought it , because the information it delivers is useful , and I can get rid of some older single chemistry chargers.
B**N
Great charger for active household.
This charger is right for my needs. I have had no need to override the automatic setting just place your rechargeable batteries in and they are charged at the correct rate and power.I have used it for AA, and two kinds of 18650 (flat top and button top), simple to use and versatile, it has worked for all our recharging needs.
A**R
Does not charge at a good rate --- read on
18650 batteries charge at a much higher rate than this one in other models of Miboxer . When charging only one 18650 battery that was half discharged it would cycle up more than .3A when it should have gone to around 1.5A ,this is not good .So I'm returning it by ---HERB THE POWERMAN---
L**G
OK charger, get the C8 instead
I've been using this charger for a few months. I also have a C8 charger, and I like the C8 much more.Pros:1. Can charge wide variety of cells2. Displays quite a bit of infoCons:1. Automatic charge is way too conservative, usually charges 18650 below 0.5 A2. Mis-identified some 16340 cells as NIMH3. Resistance value seems offIf you are looking for a fast charger for your LiON and NIMH cells, I recommend the C8 instead. It has all the pros and non of the cons of the C4.
B**E
Charger works great!
This charger charges 8 batteries all at the same time. It will charge the NiCads and lithium batteries. We purchased it for charging the CR123 rechargeable lithium batteries, and it does an excellent job. The LCD screen displays when status of battery charging by percent up to 100% when finished, and then the charger automatically shuts off.
