Miboxer Questions

So I was looking at the Miboxer C4-12 (new version with 2 buttons) and the new C4plus. If I’m reading this correctly, the C4-12 has 3 amp charging, and displays the temperature of the cells, the C4plus is 2.5 amps and no temperature display, everything else looks the same. Looking on Bang good, the C4-12 is cheaper and seems like a better deal. However, I don’t really see using 3 amps, so am I missing something about the C4plus?

Just to clarify, C4 Plus can only deliver 2.5A to each cell when charging 1 or 2 cells. When charging 4 cells at the same time, max current will be 1.5A to each cell.

By comparison, C4-12 will push 3A to each cell, even if you charge all 4 at the same time (a total of 12A of current).

With that said, I never charge any of my cells at 3A. I charge my 18650s at 1.5A usually, and my 26650s at 2A.

Fair enough. So it still seems like the C4-12 is the better deal, tempature readout seems good to have.

Yeah, and it’s not just a readout. It’s an automatic safety feature as well - when the battery reaches 60C, the charger will automatically lower charging current for protection. If the temp hits 70C, it will stop charging altogether.

At least that’s how it’s supposed to work in theory. :slight_smile:

The C4-12A has auto current. Just drop the cells in. If they are low Internal Resistance (< 10 mOhm) they may charge at 3 Amps. Below 50 mOhm they will charge between 2 and 3 Amps. You can manually change these parameters if you feel uncomfortable with high charge rate. It’s a feature that is great when in a hurry. You’re not supposed to leave batteries charging unattended (overnight). I prefer the high rate, a few hours and ready to go (high drain cells).

And so does the C4 Plus.

There are batteries with IR below 10 mohm? Never seen that. Just wondering.