Super sale Banggood - Upgrade C4-12 $28.95
The upgrade Miboxer C4-12 has finally arrived home. First impression, box look very identical to older one except bit longer. So it has 2 button, nice. So description say ” Fit protected 21700” yeah, I tested with protected Klarus GT21-50…it fit well! But haven’t yet test cell charging, so how it works I’ll tell them later on…sorry my cell haven’t drained yet. Nice add to temperature selection, celcious or farrenheit.
Only one took my attention, the LCD backlight especially on the right side…I can see 2 beam/light very bright… I was wondering why I’m seeing this, I thought it some kind of LCD minor faulty probably from shipment. Is anyone on Blf experience this It look like uneven spreadout of light, a bit ugly for me. But I’m fine, that not my big case tho.
ofcourse Backlight function works well indeed brighter. Gues I have to mail them about that issue.
Well, I finally got New Miboxer C4-12!!!
Immediately I wanted to do the test, I discharged Ni-Mh AAA LADDA to 0.05V and put the cell into the charger. At first he wrote “Err” and began to charge a droplet charge. With a voltage of 0.08V (not 0.8 !!!), he saw the cell, recognized it as Ni-Mh and set a minimum charge current of 0.1A based on the internal resistance of the cell over 1000mΩ ( “—-” ). When the internal resistance of the cell dropped to 400mΩ, the charger raised the current to 0.2A and so on. By the end of the charge, the internal resistance was 58mΩ and the charge current was 0.7A.
Tell me, what else is there a charger that can charge so beautifully in automatic mode?
I never charge my AAA cells at 0.7A, but I suppose it’s not unsafe.
Certainly for ordinary Ni-Mh AAA - 0.7A is a lot. But this is LSD AAA N-Mh LADDA from IKEA, for them a current of up to 0.6C is normal. By the way, Xtar VC4S and VC2S installs automatically the charging current 2A for this cell - and this is already too much, but apparently Xtar does not think so.
What is the capacity of this LADDA cell?
LADDA AAA Ni-Mh - 900mAh
So, a current rate of 0.7A for this cell would mean 0.8C.
i’m pretty sure my VC2S charges most NiMH at 0.2A not 2A. Surely you must be mistaken about that charge rate.
Please, see Round cell charger index
VC2S - min current 0.4A.
0.2A is only the starting charge current, then the charger will set a charge current of at least 0.4A. And on the passport min charge current 0.5A.
Most likely you are charging old cells. What is their internal resistance?
I have this charger, when inserting a cell AAA LADDA Ni-MH with internal resistance 50mΩ, it exposes the charge current 2A.
This is not a deadly difference.
Yup. I already stated that it’s not unsafe. I just prefer to use a lower rate.
I agree with you. I’m just very excited about the automatic work of New C4-12.
I charged my relative new Ikea Ladda AA 2450 mAh batteries at 1.0A in my Lii-500. One of them got very hot, I guess over 60 degrees Celsius. Think I will go for 0.5A charging.
Strangely, Dane even charge 4 AA Eneloop at the same time, the temperature does not rise above 43 degrees Celsius
For NiMH I will always use my Powerex C9000. I can set the charge current for each individual cell at anything between .1A and 2.0A. No surprises that way.
Miboxer allows you to manually set charge current for each individual cell as well, but in addition there is also the auto function.
Oh, ok. Sorry. Hard to keep all the different chargers’ feature sets straight, there are so many now.
So Banggood is back to $42 on this charger, and it’s not yet on Amazon. Are there any other retailers that might be selling it at a good price ( < $30 ) in the near future?
Register at M4dm4x’s site, he has a deal that makes it a bit cheaper than $42.