^
I guess time will tell what they do Speed4goal. I agree with you pretty much. Keep the discharge to 2.8V, address the power supply issue fully, do whatever they can with the heat issue, and it would be nice if cell all came off the charger at right at 4.2V.
We will see…………… 
I decided to cut the raised vent slats out of the bottom of my 3100—The way the vent slats are made I was only able to cut out every other one(this way left more to support the remaining ones—I feel this is a big improvement in air circulation— The air coming out the fan is 2-3 times more evident(hope that word makes sense) I’m discharge/charge testing right now—if some one wants a pic let me know
Today I also tore apart a broke laptop for the blower/fan— thought it would be perfect for the underside of the case—worked spectacular on a 4.2 cell— it jumped once with 12v Dead now—it was 5V but on many post it was stated 5V will run on 12V just diminishes the life—I didn’t think it would be so quick—LOL
teacher—That girl Wolf sure has a sweet voice—LOL——- who’s the artist
Hmmm, sounds like a good idea chops…… :+1:
Yes sir, I’d like to see pics please. Good ones too…. 
… I’ll probably just do mine like you did yours.
Sounds like you have a good idea with the other fan too……. sorry it was so short lived…… 
I honestly do not know.
I searched and all I can find is what it said below the video when seen on YouTube …… “the voice of Celtic woman”.
It sure is a sweet & relaxing voice though. :+1: …
la cacion the voice de celtic woman con hermosas imagenes de lobos = the cation the voice of celtic woman with beautiful images of wolves
Here’s my 3100 Back with every other slat removed—I used a cut off wheel with a dremel —- air circulation with positive end of the charger raised is 2-3 times better
Heck yeah!! I bet that is a game changer…… :+1:
Did you take the back off to cut it??
Thank you for sharing this……
As you can see “Everything” has gone as “Smooth As Silk” and according to plan. Nothing but honest communication and mutual respect.
sales@opus-instrument.com
10:31 PM (8 minutes ago)
to me
Hi, Robert.
Yes, I can send you new charger for your review.
Do you need BT-C3100 or our newly planed next generation charger?
we are thinking to make a design change. Our current BT-C3100 is a CV charger with simulated CC design. This design has high power adapter quality requirement.
We are making a new design so that we adopt CC charger and it will have less stress on power supply.
This new design is under R&D stage, but it will take us several months time to complete.
regards
henry
/\\\\\\
See if you can find out if the “new” charger is going to still terminate discharge at 2.8V Robert. Thanks in advance……
Wolfdog———————-Good luck with that—I hope Opus is better than Haiklite about replacing things and a review item
I have been waiting for 2 new drivers and battery plates for my Sub Par lights from them—when I keep asking they say coming by such and such date/how about we send you a new release to review—been going on since Febuary
Yes it is—just a statement from a frustrated consumer
I’m going to go out on a limb and post according to the original topic
Difference between the BT-C3400 and the BT-C3100
The 3400 works perfectly
1)The power supply is different and is adequate for all the testing I’ve tried
2) At 1 1/2 yrs old when the fan starting making noise—The direct replacement from Gearbest works as good if not better than the original
Please make sure he sends a sample of the new design to HKJ
I don’t think you had to go far out on the limb chops, IIRC you have just about summed it up in a nutshell. :+1: … 
I personally will be interested to know if the new model, Mr. Xu told wolfman was in R&D; is going to discharge down to 2.8 V.
Yes,good thinking,already contemplated by wolfdog.
Robert Mazur
11:57 PM (12 hours ago)
to sales
Hi Henry,
The Band width was running out on original email!
I thought of another important question!
Will the NEWLY PLANNED NEXT GENERATION CHARGER Terminate at 2.8v? Or 3.1v like the BT-C3400 that “rdana” has?
I prefer 2.8v because it will give more accurate capacity results according to HKJ our Battery/Charger Guru.
Thank you,Robert
sales@opus-instrument.com
2:34 AM (9 hours ago)
to me
Hi, Robert
we are flexible. But for different people, their persfective is not same:
For those with not protected, discharge until 2.8v is fine. But for those with protected batteries, discharge to 2.8v will trigger a depletion protection.
So what I am thinking is that we should make it as ” with discharge loading, the battery should be discharged until 2.7v”. this might be able to satisfy both types of batteries.
How do you think?
regards
henry
_
Robert Mazur <capolini1226@gmail.com>
8:57 AM (3 hours ago)
to sales
Hi Henry,
I am not sure exactly what you mean? I may have misinterpreted it.
If you are concerned that protected batteries trip at 2.8v then why would you make the cutoff at 2.7v?
In 3 months I have discharged around 300 protected batteries on my Three Opus BT-C3100 2.2. Only One [1] battery tripped.That has never been an issue for me.
The issues for me that were already discussed were:
1.STOPPAGES due to inadequate fan [batteries too hot/sensor activated] resulting in inaccurate capacity tests. Hopefully resolved w/ my Delta fan 12v/0.12a/1.44w.
2.RESET-Due to inadequate SMPS[Power Supply].Resolved w/ TOP TIER Lite-On 12V/5.5A/66W SMPS
Like you said, we All have our preferences. 2.8V is fine with me. IF you were to change it, then 2.7v would certainly be my choice over 3.1v[3400 V3.1]
Thanks,Robert
See u in a day or two when “More will be revealed”
^
Thank you Robert…… :+1: .
EDIT: Like you Robert, I have never had an issue of protection circuit being tripped with 2.8 V discharge. No problem at all.
What if anything did you need to do in order for a 25x25x10mm axial to fit in the charger?
Mine overheated again last night discharging 4 18650’s at 1000mah. I kind of think of the unit now as a max 2000mah discharger.
Thanks
One more favor Robert. If you still have the original 5V ADDA fan, would you verify the size as 25 x 25 x 9 mm please?
I am still wondering if that 25 x 25 x 6 mm ADDA fan I listed a couple of pages back would fit…. with maybe a bit of silicon caulk holding it in place?
Thank you……. . :+1:
Honestly I’d love to see the discharge go down to 2.5 volt but u don’t see that happening. The lower the better. Protection circuits trip below that. And would be very accurate capacity results. I’ve popped protections and they were below 2.5 when I got them reset. 2.7 would be great.
Maybe we can get henry to add 2 amp discharging like the sky rc 3000? Can that be asked. Since there building from scratch may as well ask for good features. Since it maybe another 7-8 years before another version is made