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

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wolfdog1226
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HKJ wrote:
wolfdog1226 wrote:

[quote=wolfdog1226I asked HKJ earlier today if 12v/3a is enough for 4 batteries @ 1amp?: Easily, 12V 3A is 36 watt, 4 batteries with each 4.2V charged at 1A is 16.8 watt, there is a lot of spare power for display and heat.

What I did not say was that it requires that the charger know how to handle the power. The first versions of the C3100 charger was very bad on that, in later versions it was improved, but not perfect. This means that a sensitive power supply may give the charger problems.

But you have the problem during discharge and that do not make any sense, the charger is not supposed to be loading the power supply when doing discharges.

The discharge process was over and it was transitioning to charge. that is when it kept turning off and defaulting to 500mAh.

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wolfdog1226 wrote:
The discharge process was over and it was transitioning to charge. that is when it kept turning off and defaulting to 500mAh.

That means you power supply is rather sensitive, try a more powerful one. The opus charger do have some nasty spikes in its power draw, a large capacitor in the power supply will handle it (or a slow over current limiter). The problem is not the average current draw, but the peak current draw, the power supply supplied for my test had no problems with the “fixed” version of the Opus, but a power supply with very fast over current protection will have a problem.

A guess would be that Opus has change supplier of power supply, without checking if it can handle the requirements of the charger.

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

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wolfdog1226 wrote:

I spoke too soon. That was yesterday! Did a Discharge/Test 1amp. I came in the room right after the 4 X 18650 Orbtronic were discharged and just went into CHARGE cycle. I noticed it was charging 500mAh and the Capacity data was NOT there. I set it back to 1000mAh. Came back in room 5 minutes later and it was @ 500mAh again! Set it back to 1000mah and this time I watched it. Three3 times in a row the unit reset[shut off] and defaulted to 500mah again!
YEP!!!! That is exactly what mine does. Thumbs Up
Which I really would not mind so much….
…BUT for the fact that ALL the Capacity data is lost and resets each time it does it. Facepalm
.
Smile

EDIT……….

wolfdog1226 wrote:

The discharge process was over and it was transitioning to charge. that is when it kept turning off and defaulting to 500mAh.
+1 on this too.

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I do not have a more powerful power supply.

The picture will have to wait until tomorrow as I am testing again to see if it gives the same results!

I am getting another Opus on Monday! If that one fails I give up on Opus all together or buy another power supply which I do not want to do.

I love the longevity, simplicity and reliability of my FENIX ARE-C2! Thumbs Up

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Jon from Liionwholesale’s guess is that it is overheating and/or may have a failing/bad thermal sensor?

EDIT: The theory about over heating makes no sense to me because the charger NEVER feels hot. The power supply gets warm but not hot like Opus number 1!

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wolfdog1226 wrote:
Jon from Liionwholesale’s guess is that it is overheating and/or may have a failing/bad thermal sensor?

I doubt it, in my opinion the most likely cause is the power supply. The Opus will draw more than 3A in peak current, in my test I measured 6A for nearly 0.02 second. Then 0A for 0.03 seconds, bringing the average below 3A

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

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HKJ wrote:
wolfdog1226 wrote:
Jon from Liionwholesale’s guess is that it is overheating and/or may have a failing/bad thermal sensor?

I doubt it, in my opinion the most likely cause is the power supply. The Opus will draw more than 3A in peak current, in my test I measured 6A for nearly 0.02 second. Then 0A for 0.03 seconds, bringing the average below 3A

ok,,,,,,,,If I go that route I do not want to order online. I have to find a place that sells them where I can bring my charger to make sure it works.

If it is indeed the power supply the new one I get Monday will probably have the same issue!

Solitude breeds contemplation which creates clarity. 

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Hey wolfdog…… what size is the plug that goes into the charger?
I am not home right now to look.
But I am gonna try to pick up a used power supply (at least 12v x x4a) at the electronics shop in town before I go back to the compound. Wink
But I need to know the “plug to charger” size………

Thanks in advance for any help given here………… Thumbs UpWink

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^^^^ Let me look,,,,,,not sure if I can decipher while it is charging!

I looked on line for these and they were $15 and up,,,,,I do not want to pay half the cost of my charger for a power supply! I am not confident If I ordered one online that it would be the right one,when I can just get another opus,,probably w./ the same issue!!

Solitude breeds contemplation which creates clarity. 

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wolfdog1226 wrote:
^^^^ Let me look,,,,,,not sure if I can decipher while it is charging!
My bad, don’t worry about it if you can’t. I’ll just try tomorrow when I find out the plug size. Wink

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There is no indication of the size of the barrel plug in the manual or written on the charger/plug itself. It will take 10 or 15 minutes to post pictures,that will give info gausse wants but may not help for barrel plug size.

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gauss163 wrote:
The C3100 uses the most common 5.5 × 2.1mm DC barrel connector.
Thanks gauss163. Thumbs Up I appreciate that info. Smile

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wolfdog1226 wrote:
There is no indication of the size of the barrel plug in the manual or written on the charger/plug itself. It will take 10 or 15 minutes to post pictures,that will give info gausse wants but may not help for barrel plug size.
Already got the size from gauss, so the only thing left is the power supply spec pic for gauss. Thumbs Up

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THIS IS THE SMPS FOR MY OPUS 2.2 VERSION

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

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gauss163 wrote:
The C3100 uses the most common 5.5 × 2.1mm DC barrel connector.

Are you sure Gausse?! I may order one next week!

FAVOLCANO FAVOLCANO® AC 100-240V To DC 12V 5A 60W 5.5×2.1mm DC Output Jack Power Supply Converter Adapter for Led Li

$21.13,crazy,more than half of what I paid for the opus!

This OPUS thread is bringing the love back,no more bickering! Smile

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

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^^^

OK,Thanks,,,,,,,,,I will check that out.

I did find some on Ebay for $7,seems awfully cheap………I wonder what the quality will be?

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

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chops728
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I’ve tried to make my 3400 produce the problem—it won’t do it—charging (4) 30Qs at 1amp without a hitch—-my 3100 is at my camp—I have also tried my power supply from my hobby charger 12v/ 5a —-works perfectly—these are readily available on ebay— also I’m curious if anyone has a car adapter—try it in your car on straight 12v

http://www.ebay.com/itm/12V-5A-60W-AC-Adapter-Charger-for-CHI-LCD-Monito...

I just retested my 3400 with my 2a power supply—-it reset almost the instant it started charging—I’m pretty confident it’s a power supply issue—if I remember correctly the 3100 has a more rounded edge PS—where as the 3400 I have it’s square—most likely updated

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chops728 wrote:
I’ve tried to make my 3400 produce the problem—it won’t do it—charging (4) 30Qs at 1amp without a hitch—-my 3100 is at my camp—I have also tried my power supply from my hobby charger 12v/ 5a —-works perfectly—these are readily available on ebay— also I’m curious if anyone has a car adapter—try it in your car on straight 12v

http://www.ebay.com/itm/12V-5A-60W-AC-Adapter-Charger-for-CHI-LCD-Monito...

Thanks,according to Gausse the one you posted has the Wrong barrel connector size.

Connecter size: 5.5mm/2.5mm

It should be 5.5mm/2.1mm??
One of you are wrong,,,,,,,,,I just ordered the 2.1mm,,,,,,I hope it is the CORRECT one!!!!

P.S. Mine never failed while charging 4 × 18650 @1 amp,,only when I did the charge /test

Solitude breeds contemplation which creates clarity. 

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chops728
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Not sure what size barrel I have— it’s plastic insert is yellow—thought it might be color coded

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wolfdog1226 wrote:
chops728 wrote:
I’ve tried to make my 3400 produce the problem—it won’t do it—charging (4) 30Qs at 1amp without a hitch—-my 3100 is at my camp—I have also tried my power supply from my hobby charger 12v/ 5a —-works perfectly—these are readily available on ebay— also I’m curious if anyone has a car adapter—try it in your car on straight 12v

http://www.ebay.com/itm/12V-5A-60W-AC-Adapter-Charger-for-CHI-LCD-Monito...

Thanks,according to Gausse the one you posted has the Wrong barrel connector size.

Connecter size: 5.5mm/2.5mm

It should be 5.5mm/2.1mm??
One of you are wrong,,,,,,,,,I just ordered the 2.1mm,,,,,,I hope it is the CORRECT one!!!!

P.S. Mine never failed while charging 4 × 18650 @1 amp,,only when I did the charge /test

I’ve had this 3400 for almost 2yrs—I always charge/test at 1a—— 4 at a time—-I’m talking 100s of cells from pulls to new —never had the issue you’ll are having

EDIT: my 3400 PS is the Asian Power Devices APD WA-36A12U as stated above

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chops728 wrote:
I’ve tried to make my 3400 produce the problem—it won’t do it—charging (4) 30Qs at 1amp without a hitch—-my 3100 is at my camp—I have also tried my power supply from my hobby charger 12v/ 5a —-works perfectly—these are readily available on ebay— also I’m curious if anyone has a car adapter—try it in your car on straight 12v

http://www.ebay.com/itm/12V-5A-60W-AC-Adapter-Charger-for-CHI-LCD-Monito...

Were you doing it like outlined below chops???
wolfdog1226 wrote:
Did a Discharge/Test 1amp. I came in the room right after the 4 X 18650 Orbtronic were discharged and just went into CHARGE cycle. I noticed it was charging 500mAh and the Capacity data was NOT there. I set it back to 1000mAh. Came back in room 5 minutes later and it was @ 500mAh again! Set it back to 1000mah and this time I watched it. Three3 times in a row the unit reset[shut off] and defaulted to 500mah again!
wolfdog1226 wrote:
The discharge process was over and it was transitioning to charge. that is when it kept turning off and defaulting to 500mAh.

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That may be it,,,,,,,,,,,the APD is better. That is probably the problem.

Solitude breeds contemplation which creates clarity. 

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Sorry, I may be a bit behind. I am on my phone now….. Facepalm

It is a slow go to say the least….. Wink

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I charge 4 cells at a time @ 1A often, and never had that reset happen. My power supply is plugged into a Tripp lite Isobar with line filters though. Wonder if that has anything to do with it.

Version 2.2, KYT power supply

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gauss163 wrote:
His 2.5 also works because its 2.5 inner hole is bigger than the 2.1 mating inner pin, so it will fit, but may be a bit loose (some have springs that make them work for 2.5 or 2.1 pins).

As for the quality, who knows. It’s probably no worse than the KYT that you currently have. And since it has a lot of headroom (60W vs 36W) it won’t be stressed much.

from my calculations using all my fingers and most of my toes—roughly a shade more than a 64th bigger

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gauss163 wrote:
chops728 wrote:
I’ve had this 3400 for almost 2yrs—I always charge/test at 1a—— 4 at a time—-I’m talking 100s of cells from pulls to new —never had the issue you’ll are having

Does yours have the KYT or APD power supply (see pics above), and what version do you have? (shown briefly at power-on)

Opus 3400/2.1 APD power supply

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OK,,,,,,,,,,The latest!

I decided to do another Charge/Test to see if it would replicate the failure from earlier today. For those not familiar, that test is CHARGE/DISCHARGE and CHARGE to get capacity results. Earlier today it failed several times when it was transitioning from the discharge phase to the charge phase. Basically reset[turned off/on again] and defaults to 500mAh instead of the 1000mah I used for the test[4 × 18650]

So,,,before my hike I checked the batteries and AFTER the charge[first phase] was complete,,,,,,,it did NOT transition to the discharge phase! I am positive I had the setting for CHARGE/TEST. The read out had charge instead of charge/test!!I have no clue as to why?!

How does that happen? Is that related to the Power supply that seems to be the consensus of the first mishap?

My amateur guess is in addition or possibly just by itself, there is an electrical component failing internally?

I do know this. I do not have the patience that a lot of you guys have.

Opus #1- I returned it because I felt it did not charge high enough[4.15v] and the discharge tests were too high!! Let it also be known that I did return the Power supply first because it got way too hot,,,,the charger followed in a few days. That was the first indication of a power supply problem!

Opus #2[the one I have now] charges 0.03v higher and much more accurate capacity tests.
Unfortunately it has the issues that have been discussed today.I am disappointed because I was happy w/ end voltage and capacity results.

Opus #3- I can return Opus #2 and get #3. Almost certain that is what I am going to do. If that one starts to have the same issues I can use the 12v/5a power supply that I just ordered!

I am NOT convinced that the power supply is the only thing wrong with my charger.

The only way I would delay getting Opus #3 is if Jon Caserta[owner Liionwholesale] would agree to let me keep this another 10 days or so until the power supply comes and I have several days to do tests. I think he would do that.

In any event,,if there is an Opus Three and it fails or this one fails after new power supply,,,,,,I am finished w/ Mr. Opus and Mr. Efest LUC V4 will come out of storage and be with my 2 X FENIX-ARE and KP-L2 in my flashlight laboratory!

,,,,,those are my amateur, gut feeling thoughts mixed in w/ facts! Wink

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Environment molds a person. Perseverance changes them. 

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ok,,this time I was there when it transitioned from FULL Discharge to begin charging stage.

Two minutes after discharge was complete and Charging began, it did the same thing as before. It shut off/reset and came back on default charging of 500mAh Facepalm

EDIT: Right before it happened[just like last time] you could hear the fan weaken like it and the unit was losing power, then it shut off/reset and came back on.

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

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chops728
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Have you tried it with 3 cells—that way you’d know if the charger is still working or not

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Joined: 10/09/2013 - 20:47
Posts: 1602
Location: Acquasanta,Italia/ Valley Forge, Pa. USA
chops728 wrote:
Have you tried it with 3 cells—that way you’d know if the charger is still working or not

It charged 4 cells yesterday when I was doing the Repeat Charge/Test. It just did not start or complete the discharge test.

I will try 3 cells anyway and post results in an hour or Two. I am just going to tail stand my K40vn until its ~ 3.80v and then charge them!

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

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