Opus BT-C3100 V2.0 "Dreamcharger" GROUP BUY Now @ $ 36. New coupon code - tatasal -(to close July 15) NOW CLOSED

DanielM · July 21, 2014, 5:32am

I can’t wait to see how this new one will turn out.

roberta · July 21, 2014, 6:02am

Henry Xu:

Hello, every one.

Concerning the feedback with V2.0 BT-C3100, we are going to release a new version in August: V2.1

The changing contents are:

voltage refresh update rate is changed to 30s, instead of 60s.

charging NCR18650B or NCR18650PF type Panasonic battery mAH data is optimized by controlling charging current level, and mAH data will be correct even with low output current power adapter used( still need to meet minimum output current to be over 3A@12v). This problem has been improved with v2.0 in the later shipments to Gear Best in June already.

temperature sensing for controller board now not only turns on/off cooling fan(v2.0), but also accurate controller board temperature monitored so that over heating condition will be sensed as well. This is better safety feature when fan is not running and overheating on controller board will trigger over heat charging/discharging protection to be kicked in. We don’t recommend any operation of this charger without fan operation with v2.0 charger, especially during discharging time with li-ion batteries.

improved accuracy of charging and discharging current measurement to be within +/- 3% accuracy now, while v2.0 version has 5% current regulation accuracy. This is realized through hardware change. Improved battery voltage accuracy via hardware design change.

when reversed polarity batteries installed on charger, with v2.0 charger, there can have high pulse charging current existed due to pre-charging feature activated( charger detects reversed battery as 0v voltage, and treated the battery as complete flat ones, so pre-charging on flat batteries are activated and this can cause high pulse current). With v2.1 design, this pre-charging pulse is cancelled to avoid high pulse current during the time of reverse battery polarity being connected on charger.

Battery self discharge and charger related leakage will lead to batteries voltage keep dropping after fully charged. Auto recharging procedure will activate when battery voltage dropped beyond 4.12v.
7.Improved charging termination for ni-mh batteries. Much less heat generated during last charging phase period.

With the above changes done, we think this charger needs no more firmware update anymore.

Since the controller on board is One Programmable Only type, so we can’t support on line firmware grade option. And I am really sorry for this.

Good Day Henry Xu,
.
Thank You Very Much for the information.
.
Best Regards,
Roberta 0:)

deckart · July 21, 2014, 6:55am

My charger is no good.
I completely regret buying my charger.
I am sure I speak for 702 victims when I say that we deserve a $15.00 coupon for being guinea pigs in your experimental opus project.

cat_eyes_evil_twin · July 21, 2014, 7:04am

Omg there’s no way I can buy anymore chargers.
Unless we 702 charger buyers can buy them for $20.00 each.
We spent all our money.

Ejected_Filament · July 21, 2014, 8:55am

:bigsmile:

Now I might buy one, once HKJ reviews it. Thanks Henry for taking the time to let us know. Its also nice to see you are listening to the advice of the many talented people here.

DanielM · July 21, 2014, 9:01am

Yeah, I might buy one too, I appreciate the honesty of Henry/Opus about coming forward with little tweaks and improvements on an already solid product.

tatasal · July 21, 2014, 9:03am

+1

Muto · July 21, 2014, 10:53am

I read all the new changes and do not see where the Fan itself will be of better quality.
Temp sensing is of little use if it is just a band aid fix for the fan not running on time, every time.

Please source a reliable unit.

For those being mad about a new model coming out, it’s called evolution and thank goodness our voices have been heard and the changes are happening as fast as they are.
Later,
Keith

DanielM · July 21, 2014, 10:55am

It’s like being mad at Apple for coming out with new phones and tablets every year

Ejected_Filament · July 21, 2014, 11:10am

I agree with the fan improvements. A nice quiet fan would be a good choice.

dchomak · July 21, 2014, 11:11am

I bought 2 and I have NO regrets. I am happy with my purchase.
Now, I am even happier with the anticipation of an even better charger.

To a certain extent, there comes a time when a person has to realize that ultimately, they are responsible for their own happiness.

tempo · July 21, 2014, 11:25am

do i have to buy the 2.1 now or can we wait until 2015 for the new model?

tatasal · July 21, 2014, 11:28am

Henry Xu wrote:
Hello, every one.
Concerning the feedback with V2.0 BT-C3100, we are going to release a new version in August: V2.1

lionheart_2281 · July 21, 2014, 11:29am

I personally won’t be buying one until the closing sentence of HKJ’s review reads “I rate this a very good charger”

tempo · July 21, 2014, 11:34am

now i am confused

what will happen in 2015?

HKJ · July 21, 2014, 11:40am

A completely new improved model. The updates to the current model is probably only software based, i.e. it is limited what can be done to improve it.

dangerous · July 21, 2014, 1:17pm

Maybe there is enough interest for a new group buy for the updated version. I personally don’t see the improvements as being huge, but I’m interested in the 2015 model now.

deckart · July 21, 2014, 6:36pm

happiness depends completely on GB prices and coupons.

Ryuuden · July 22, 2014, 1:33pm

Meanwhile, I have been having a terrible time trying to deal with GearBest support about my unit that displays inaccurate voltages.

It’s been almost a month now of messages back and forth.

The 2015 version may well be a real “dream charger” that I would seriously consider buying, but I wouldn’t buy it from GearBest based on my current experience.

tatasal · July 22, 2014, 1:44pm

Would you care to expound more fully on that? Voltages on the charged cells? Voltages on the charger’s display? Sharing it here would certainly help!