Difference between Opus BT-C3400 & BT-C3100 v2.1?

My Opus BT-C3100 V2.2 works fine during the full Charge / Test cycle with the original 220V power supply. Tested it with 4 NCR18650 3400mAh and 4 30Qs at 1000mAh charge.

Maybe It’s already written, but does this problem only occur with the V2.1’s?

Yeah hank, Wolfdawg pretty much summed that up and about the need for a new power supply. Mine definitely need one.

As far as the other two questions about green & energy efficient, I have now idea…. gausse would probably be your man for that like Wdog said.
I also do not leave mine plugged in most of the time, it is either on a strip or unplugged when not in use.

Hope this helps……… :slight_smile:

@ wolfdog ………… I can’t do that, you never answered my PM!!! :smiley:
I wanted to see if you happened to know the two guys I spoke of…. :smiley:

I’ll check it out when I get home and get it out of the mailbox…… I’ll try to let you know later tonight. :+1:

Yeah I got a tracking number on the adapters but it will be a few days on them at the least.

But the power supply from speaker_joe got here lightening fast!!!
Thanks again for finding that, as well as the link to it. :slight_smile:

What is the brand name on your power supply??

No it is with the v2.2 mostly I think. That is what mine & wolfdog’s are.

Well I’m glad I brought this issue up a couple weeks ago with my unit. Looks like everything is solved now. I may get a new power supply eventually. But it doesn’t happen enough to really ve a problem at this point. Just occasionally.

Sorry for being late to this discussion… I may have missed this, but what is the brand/model number of the problematic power supply?

I have an Opus BT-C2400 (so not the 3100 discussed in this thread) that is v2.2, and came with power supply model KYT120100BV-09. Was just wondering if C3100/3400 v2.2 use the same one or different…

See post #150 and #152

  1. is My 2.2 SMPS POST #152 IS 2.1 SMPS which did not seem to have a problem. Opus CHANGED manufacturers of the SMPS which seems to be what caused the problem.

We would have to find someone who has the 3400 to determine that.

I have a 3400 —It was determined mine had the better PS—- the crazy think is I have a 3100 with the rounded corner crappy PS — when I was at the camp this week I did a charge/ test on some cells —worked perfectly

On another note—I went digging through my treasures (my wife says my junk)—I found two laptop PS —- 1 Liteon 12v 5.5a
and another IBM 14v 3.5a —-both barely heat up at all during testing

Was your charge/test for your crappy 3100 w/ 4 X 18650 3400mAh @1 amp?

Does the Lite-on look like mine?!!! Same specs!

I tested cells I had on hand —not a quad of the same battery—but 4 cells charge /test @ 1amp
The LiteOn I found looks similar to that one—-I would imagine mine is quite a bit older—I think it came from an EMachine laptop I junked several years ago

So, googling, I find there’s an Opus C3400 v3.1 version for sale out there,
https://dc-workshop.com/opencart/index.php?route=product/product&product_id=50

and a couple of suggestions of a v3.2 (Russian language)

Has anyone found a list of the Opus charger products and specifications, to know what the different model and version numbers mean?

I wonder if they all come with the same iffy power supply.

From that “dc-workshop” review page, the spec includes

adatper [sic]

If you look at the two different models—you can see in the pictures the 3400 has a more square PS (Good One)
the 3100 has a more rounded PS (Bad One)

How soon we forget……. :wink:

3.1

-The 3.1 discharges to 3.1v instead of 2.8v. Here is the dealer answer to my question on Ebay:

New message from: rdana Top Rated Seller(31,011TurquoiseShooting Star)
Hi Capolini,
Yes, you are right. The discharge cut off was changed to 3.1V because most protect circuits are set at about 2.8V. So the charger could cause some cells to trip protect and the charger was getting the blame. There is no real industry standard for discharge cut off of Li-ion cells during test. 3.1V is a voltage used by many but some use 3.0V or even 2.8V. The C3400 will stay at 3.1V. I do not know what Opus will do with the C3100 V2.2. Many times they make the same change that I ask for in my chargers, but not always. Since the C3400 is manufactured only for me I will be keeping it at 3.1V. I wish that I could make the voltage selectable by the user but that may be some time off.
Thanks,
Robert

DC Workshop
PO Box 293804
Sacramento CA 95829-3804
United States

ebaysales@

sales@
danaco.net

www.datalucis.com
WWW.danaco.net

Notice the SAME guy[and only one who sells 3.1] as your link!
_

- It has already been established that the 2.1 and 2.2 versions use Different SMPS from different manufacturers. I mentioned this in an earlier post and provided info. as where to find it.

- I have no idea what SMPS the 3.1 uses.

I sent Robert[rdana] from ebay/dc workshop an email and asked him if he knows/could tell me the power supply that the 3.1 version is using.

I would be surprised if it is the same one for my 2.2v,then again it is ONLY discharging to 3.1v so that itself could make a difference in power surges needed for 4 X 18650.

When I hear back from him I will post it.

You still have not answered my last PM wolfdog!!!#???

BUT, it works just fine…. :slight_smile:
……no “resets” at all. Same as yours, if you find the sweet spot & don’t move it all is well. The adapter is a must have though. Glad we have them on the way. :slight_smile:

This seems to be a substantial power supply…… Nice heavy feel to it.

Done!!!..along w/ a beautiful bonus Picture that I took in Italy.

One of the first things I noticed was that SOLID feel to it.It is bigger than my Supernight…not by much. A 1/2” wider and a 1/4” longer.

Very interesting, thanks for looking into this by asking him

This is my power supply:

Edit: Only “brand” name I can find on it is “Made in China” :person_facepalming:

Yours is the same as mine. The only difference is the Plug! [European/USA]

The one that Gauss posted[APD WA-36A12U] IN POST # 152 seems to be of better quality and so far no one has mentioned problems w/ it.

Here is mine again so we do not have to go to post #150 again!

The bottom line is IF it works Ok,fine. If not you spend $10 for a much. much better quality one[Lite-On 12v/5.5a/66w].

For those that may have missed. The first cord I got w/ my Opus got way too hot and I exchanged it for the second one which could not do the CHARGE/TEST w/ out resetting!

Noooo! :disappointed:

Hope it keeps goin’ strong. Never noticed anything unusual with it yet, and it gets used at least twice a week.

I’ll have a preemptive search through my old-adapter-box-of-pandorra. See what it brings to light…