Is the charger worth $100?
will the charger go down in price to maybe %50 in the next year or so?
my opus fan is making sounds, like it struggles, and kicks on and off making loud whirr sound. my Wife is afraid it will explode… ( it will not)
Change the fan, its a great charger but with one disatvantage- cant revive liions whitch dropped under 1.3 volts, take a xtar VC2 plus or vc4 and combined with your Opus youll have a dream setup
Same symptoms on my MC3000, but once it’s got momentum it becomes silent, not loosing sleep about it, if the fan fails i’ll change it.
I had mine for a couple days now, and this is really many times superior to the Opus in both build quality and functionality. Yes it is expensive, but worth it.
What I like the most is that the termination current for both charge and discharge can be set, and it reads internal resistance with some accuracy. The MC3000 is essentially a hobby charger with advanced UI and it gives you the ACTUAL capacity of the cell, not some inflated numbers like the opus does.
The same set of Sanyo GA reads ~3450mAh in the opus while the MC3000 reads ~3280mAh. You might think the opus is correct since the number is closer to the manufacturer rating but it is not, because they rate the cells using only 0.2C discharge rate, C/50 termination current, target voltage 2.50V and at 20C ambient temp. Pretty much impossible to achieve in real life use.
+1 what mikto says, when discharging 4 cells at 1A each the internal system temp can raise up to 75C, Right now I use a xiaomi fan connected to a power bank and it cools it down at 60C.
On li-500 those charged to their max are like 3270 each( from 2.8v) , Xtac VC4 said 3240 and Opus 2.2 3290
Oups has a new revision witha completely silent fan, i got two of those a month ago, and they are nearly silent, not like the ones i bought half a year ago
My Opus fan was making some odd noises too.
Lube the fan. All it took was maybe 2 minutes to remove the bottom plate and spray a little bit of rem oil on it. Good as new.
Is there any way rem oil will hurt it? Should I use silicone spray or ballistol
Good question. Someone mentioned they used gun oil to lubricate their opus fan and I followed up and did mine the same. I just barely dribbled a few droplets into the gap on the fan. I figured it either would help or kill it and then I would replace it with a better fan. :D
Is it a universal fan? What would I type in to find one to fit?
The label on the fan will list what voltage it need. Then you measure the size of the fan in millimeters (width, height, depth) and search ebay using the voltage + width/height, say “5v 30mm fan”, and look for ones that match the depth measurement.
Thank you.
So my opus is definitely worth keeping then. It seems to do a great job. My craftsman multimeter seems to read high for opus and liikala 100 charger. By abou .02-.04 so it may read 4.24 volts after charge.