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Thread: SkyRC — IFA 2014 — MC3000 charger-analyzer

  1. #4441

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by kreisl View Post
    @Ravel, fantastic info and links! I never went into Linux, Debian or Raspi before but now with your recipe and DEX3.2.9 i am planning to have Raspi on my purchase list this year.
    You will have fun. Tutorial in next post
    Last edited by Ravel; 02-05-2017 at 07:47 AM. Reason: Trouble with line feed !

  2. #4442

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Remote control of DEX running on a Raspberry Pi
    Tutorial or recipe version 0.001a

    Here are 3 or 4 solutions (welcome to linux)

    Solution 1 : remote Pi desktop with tightvnc
    Solution 2 : no remote desktop, no window control
    Solution 3 : no remote desktop, xpra for window control


    Your mileage may vary according to your needs and OS.
    This is intended RASPI to linux, but I suppose very little needs changing for windows users (GUI).
    I prefer number 2. I suppose n° 1 is the best-seller.

    ==============================================
    ========== Solution 1 : remote Pi desktop with tightvnc ====
    ==============================================
    The most versatile solution : full control of the remote PI desktop

    Plenty of tutorials, here some ideas
    http://www.howtogeek.com/141157/how-...-transfer/all/
    http://www.instructables.com/id/Sett...-Raspberry-Pi/
    https://www.robertsetiadi.com/instal...-raspberry-pi/

    Skipping the automation for starting VNC on the raspi at boot time,
    one just needs to install on the PI side a vnc server, for example :
    sudo apt-get update && sudo apt-get upgrade
    sudo apt-get install tightvncserver
    #Then start it and give it a password, 1 is the number assigned to the desktop
    tightvncserver :1

    On the linux laptop side assuming (the client side) xtightvncviewer is installed
    (window users will also have plenty of remote access solutions, like
    http://www.tightvnc.com/download.php)

    One can connect on laptop side with:
    xtightvncviewer 192.168.x.y:1
    On can remote-click on the dataexplorer to launch it, play around,
    then kill the xtightvncviewer window.
    Come back later with xtightvncviewer 192.168.x.y:1
    dataexplorer will have continued running.

    #On the PI side to kill the server
    tightvncserver -kill :1

    ================================================== ====
    ========== Solution 2 : no remote desktop, no window control ======
    ================================================== ====
    Trouble with this solution, one cannot resize dataexplorer window
    (maybe possible, I did not try to find what is missing). Save memory/CPU.
    Inspired from Headless VNC-Server using xvfb
    at http://www.kaltpost.de/?page_id=84

    #RASPI side
    sudo apt-get install x11vnc
    x11vnc -storepasswd
    Xvfb :1 &
    or better
    Xvfb :1 -screen 0 1600x1200x16 &
    cd Dataexplorer (wherever you are you need to cd into the dataexplorer directory,
    since we have not defined a default path for the dataexplorer java file)
    DISPLAY=:1 xeyes &
    DISPLAY=:1 ./Dataexplorer &

    #On the client side, quotes are important
    ssh -L 5900:localhost:5900 pi@192.168.x.y 'x11vnc -rfbauth /home/pi/.vnc/passwd -localhost -display :1'
    #If you are curious of what the above does
    netstat -tuan
    #and in antother console
    xtightvncviewer localhost


    ================================================== ====
    ========== Solution 3 : no remote desktop, xpra for window control ===
    ================================================== ====
    no raspi desktop on server side, DEX is running in laptop (client) via xtra as a resizeable application
    Inspired from Remote display with xpra, NX equivalent
    at https://www.raspberrypi.org/forums/v...p?f=64&t=13968
    using http://xpra.org/

    #Raspi side
    sudo apt-get install libx11-dev libxtst-dev libxcomposite-dev libxdamage-dev python-all-dev python-gobject-dev python-gtk2-dev cython xvfb xauth x11-xkb-utils
    sudo apt-get install libxkbfile-dev
    sudo apt-get install python3-dev
    sudo apt-get install tightvncserver x11vnc

    wget http://xpra.org/src/xpra-0.14.37.tar.bz2
    #older version may not work with newer version of ssh
    #0.14.xy is the old LTS (long term support) release. This legacy version will be discontinued in early 2017.
    #I experienced compiler errors with v1.0
    tar xjf xpra-0.14.37.tar.bz2
    cd xpra-0.14.37/
    #less INSTALL
    #nano setup.py
    #disable x264 or find out how to enable it. Next line does the disabling
    # clue :
    # sudo aptitude install libx11-dev libxtst-dev libxcomposite-dev libxkbfile-dev libxdamage-dev python-gobject-dev python-gtk2-dev xvfb cython libx264-dev libswscale-dev libavcodec-dev libvpx-dev libavformat-dev
    #Disabling x264 for now
    sed --in-place 's/enc_x264_ENABLED = True/enc_x264_ENABLED = False/' setup.py
    #compiling and installing xpra
    sudo ./setup.py install
    cd ..
    xpra --version
    xpra start :101
    pstree
    DISPLAY=:101 xeyes &
    DISPLAY=:101 lxterminal &
    jobs
    #adapt to approriate directory, or not needed if Dataexplorer is in the default path (hint : see command env)
    cd mydataexplorer/DataExplorer/
    DISPLAY=:101 ./DataExplorer &
    ps -eaf

    #On the laptop (client side)
    #assuming you also have installed xpra one way or another
    #full alternate syntax is
    #ssh/[USERNAME[:PASSWORD]@]HOST[:SSH_PORT]/DISPLAY
    xpra attach ssh:pi@192.168.x.y:101
    #to quit client side (press Control-C to detach)
    #this will leave DEX alive on the raspberry

    From the documentation :
    xpra start ssh/SERVERUSERNAME@SERVERHOSTNAME --start-child=xterm
    Xpra normally forwards just the windows of the application you are interested in. If you want to forward a full desktop instead (including its start menu, background, task bar, etc...) use the "start-desktop" mode: example with fluxbox
    xpra start-desktop --start-child=fluxbox

    ================================================== ====
    ========== Solution 4 : no remote desktop, NX for window control ===
    ================================================== ====
    Enterprise solution see
    http://www.tiaowiki.com/w/Install_NX...n_Raspberry_Pi


    ========= end
    Last edited by Ravel; 02-05-2017 at 01:30 PM. Reason: added sudo apt-get install python3-dev

  3. #4443

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Proof screen capture firefox on client side and above the remote PI desktop



  4. #4444

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer



    post #4444 scnr

  5. #4445

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Screenshot with xpra, taken on Laptop

    LTop = DEX
    RTop = lxterminal from pi, running htop on pi
    middle = xeyes (running on the pi)
    bottom = launching xpra, client side
    very bottom = ssh session from latop to PI, launched DEX via DISPLAY:101 on the PI


  6. #4446
    Enlightened
    Join Date
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    Location
    Germany
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    57

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Is there a way to synchronise the actions of all 4 slots?
    If I do a cycle C>D or C>D>C and log it with DEX then I would like to synchronise the Discharge.
    I would like to see on the graphic the start time of discharge at the same position of the x-axis.

    Can I persuade the MC3000 to do this?
    Is there a way to do that in DEX?
    Or do I have to export all data and use Excel for that?

    It would be nice to have an optional pause property and all paused slots will continue their job after pressing a specific button.

  7. #4447
    Unenlightened
    Join Date
    Feb 2017
    Posts
    1

    Default Re: SkyRC — IFA 2014 / CES 2016 — MC3000 charger-analyzer

    Quote Originally Posted by millguy View Post
    Anyone with a bricked charger due to failed firmware update, it's probably not really bricked!
    SkyRc sent me a different updater.
    Hello Millguy. Can you please share the mentioned unbrick tools with me? I bricked my mc3000 trying to update to V1.13 on Win7(x64). That buggy updater crashed at ~75%.
    As far as I'm new on this forum I'm still restricted to send PMs directly. So trying to contact you via this post...

  8. #4448

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Hi, i can't think of any way to make DEX synchronize the Discharge routines of your different slots/slot programs. Neither mc3k device can do it nor can DEX afaik. Yes we would need to post-process the data with Excel for this purpose. There is no other way afaik.

    Pausing. Interesting idea. You want to pause every slot independently through a key stroke on the charger? I can't imagine which key stroke that could be. Anyone? And which key stroke to release all paused slots altogether?

    If i like your key stroke suggestion, i'll make it happen

  9. #4449

    Default Re: SkyRC — IFA 2014 / CES 2016 — MC3000 charger-analyzer

    Quote Originally Posted by vronp View Post
    So, I'm just getting into playing around with DEX and I either misunderstood the DEX capabilities or I am missing something.

    Is it possible to create "charging profiles" in DEX and upload them to the MC3000? It sure would be nice to build a library of profiles that could be shared on this forum.

    Vronp,

    I finally got everything working and thanks the everyone's help.

    I have attached a .pdf file giving step-by-step procedure for installing the "createDummyUsbDriver.sh" onto MAC OS X computer with minimal "Terminal" interaction.
    Last edited by ninjasmoke; 02-10-2017 at 12:29 PM.

  10. #4450
    Enlightened
    Join Date
    Nov 2016
    Location
    Germany
    Posts
    57

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by kreisl View Post
    Pausing. Interesting idea. You want to pause every slot independently through a key stroke on the charger? I can't imagine which key stroke that could be. Anyone? And which key stroke to release all paused slots altogether?
    I want to pause as part of the program. And continue all paused slots.

    Quote Originally Posted by kreisl View Post
    If i like your key stroke suggestion, i'll make it happen
    The red button (switch) near your power adapter

    I don't know - perhaps a unique feature available only for the Apps (windows, androids, ...)?

  11. #4451

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by DT123 View Post
    I don't know - perhaps
    hehe funni red switch won't do.

    hope you can know, since you're the one suggesting the new feature.
    let your imagination form a concrete picture, clear in its details in your mind, and lay them out for us thanks.

    the only key stroke left is short-pressing STOP in SOV or DDV. we had removed it, too many people clicking it inadvertently iwrc

  12. #4452

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Hello. Another first post by someone in this thread. I've ordered one of these chargers for use with li ion for flashlights for the ability to set top voltage and storage functions. I've tried searching and am slowly reading my way through but still have many pages to go.
    First question is about storage mode. I've downloaded the app and am looking at the settings to get familiar with everything. If I wanted to have a final charge of 3.7v would I set the charge cut voltage at 3.7v, would I also have the discharge cut voltage at 3.7v and the charger will automatically charge or discharge depending on starting voltage of the battery? Or do you set the discharge lower (3v) and it first discharges to that amount then charges to 3.7v?
    The second question is about battery longevity. Is it easier on a battery (again Li Ion) to charge to 4.2v with a higher termination current (10-20%) that settles more on rest or to charge to a 4.15v target with a lower termination current (5%) to have less of a drop after resting?
    These are things that weren't available on my current charger so I appreciate any help or comments.
    Thanks

  13. #4453

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    hi, welcome on CPF!

    the charger has a dedicated storage operation mode. once you've set this mode, you'd set 3.7V as your TARGET VOLT, other voltages cannot be set afaik. the charger will then charge or discharge depending on the voltage at start.

    the second question i cannot answer, i never did my own research/study of effects on battery chemistry and also never cared to read journal articles on any related topic. maybe there is a scientific paper on 'the effects of low termination current on lower liion voltages versus high termination current on higher liion voltages', somebody else here would know, not me. it is an interesting question though because it is a simple question (because it is straight-forward) and i cannot answer it.


  14. #4454

    Default Re: SkyRC — IFA 2014 / CES 2016 — MC3000 charger-analyzer

    Glad to hear it is working. The more Mac users on this forum, the better.

    The link in your post wasn't working for me. I would be interested in seeing the PDF in the interest of perhaps offering edits.


    Quote Originally Posted by ninjasmoke View Post
    Vronp,

    I finally got everything working and thanks the everyone's help.

    I have attached a .pdf file giving step-by-step procedure for installing the "createDummyUsbDriver.sh" onto MAC OS X computer with minimal "Terminal" interaction.




    https://apia.wd2go.com/api/1.0/rest/...976bd376bd3698

  15. #4455

    Default SkyRC — IFA 2014 — MC3000 charger-analyzer

    Vronp,
    I agree!

    I just touched on the link and the file came up so give it a try again.

    If you're still having problems I can send you my email address or you send me yours and I can send it to you that way?
    Last edited by ninjasmoke; 02-08-2017 at 05:31 PM.

  16. #4456

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by ninjasmoke View Post
    I just touched on the link and the file came up so give it a try again.
    curious what your PDF file looks like thanks.

    try to clear your cache/stash/of/cookies , then i am sure that your download link will stop working for ya.

    i upload files on filehorst.de or zippyshare.com . no registration or login required . just fire away .

  17. #4457

    Default SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by kreisl View Post
    curious what your PDF file looks like thanks.

    try to clear your cache/stash/of/cookies , then i am sure that your download link will stop working for ya.

    i upload files on filehorst.de or zippyshare.com . no registration or login required . just fire away .
    Kreisl,

    I am using my Apple iPad and or Apple iPhone and touching on the link works fine. I am we also using the candle power app on my iPad. I stored it on my WD mycloud.

    Here is a drop box link:

    https://www.dropbox.com/s/zalptfhbk7...S%20X.pdf?dl=0
    Last edited by ninjasmoke; 02-08-2017 at 05:47 PM.

  18. #4458

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    A : Can you see the moon too? It's so beautiful tonight!
    B : Where is the moon? I cannot see it.
    A : Why can't you see it? It's right there, in the skyrc, where it should be.
    B : I can't see it probably because it is mycloudy over here.
    A : Huh, I didn't think of that. Where are you?
    B : I am in Galicia, Spain.
    A : Oh.
    Last edited by kreisl; 02-08-2017 at 05:58 PM.

  19. #4459

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by kreisl View Post
    i do believe you and that the links works fine for you .

    but when you log out of your clouds and uninstall the apps and whatnot and clear the cookies, then … etc .

    then again, i don't know myself how to log out of my phone apps like messengers and i also don't know how to reset them or clear the cookies .

    good point !
    LOL LOL

    Aliasninja1@mac.com

  20. #4460

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Thanks for the help! Looking forward to being hands on with the charger.



    Quote Originally Posted by kreisl View Post
    hi, welcome on CPF!

    the charger has a dedicated storage operation mode. once you've set this mode, you'd set 3.7V as your TARGET VOLT, other voltages cannot be set afaik. the charger will then charge or discharge depending on the voltage at start.

    the second question i cannot answer, i never did my own research/study of effects on battery chemistry and also never cared to read journal articles on any related topic. maybe there is a scientific paper on 'the effects of low termination current on lower liion voltages versus high termination current on higher liion voltages', somebody else here would know, not me. it is an interesting question though because it is a simple question (because it is straight-forward) and i cannot answer it.


  21. #4461

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by kreisl View Post
    Hi, i can't think of any way to make DEX synchronize the Discharge routines of your different slots/slot programs. Neither mc3k device can do it nor can DEX afaik. Yes we would need to post-process the data with Excel for this purpose. There is no other way afaik.
    Maybe in the mc3k there could be an option to start the next step of all the cycles
    only when all the active slots have achieved their resting time ?
    I suppose the idea is intended with the same program running on 2 to 4 slots (similar batteries).
    In that case the resting time programmed in all the slots is in fact a minimum,
    some batteries may be experiemcing longer durations, but one may not care.

    The other possible implementation, whichever slot reaches first its spent resting time,
    would command going to the next step (next cycle) for ALL slots.

    Do I make sense ?
    Regards

  22. #4462
    Flashaholic doctordun's Avatar
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    Red Oak, Texas
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    301

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by OttaMattaPia View Post
    AFAIK, there is no "warranty Process" At least not in the USA.

    That said,there are "some" sellers who do take that role upon themselves it seems.

    Has ANYONE in the USA sent their MC3000 back for warranty service?
    If so, please say how.

    Why doesn't SkyRC have a US based office for handling warranties?

    I want to buy one but have had too much defective product from SkyRC with no solid warranty availability (in the USA)

    My apologies in advance if I'm simply uninformed and there is an easy way to get warranty service.
    I, too, am curious about the warranty process. I was unable to see any answer to this question and hoped to be directed to one.

    It appears from GearBest website, that if you upgrade the programming on the charger, even with their supplied update, the warranty is void.
    So there is a strong reason to never do that.

    The customer voids the warranty if they:
    - Flash the firmware of a device or root a device


    Thank you.
    Last edited by doctordun; 02-13-2017 at 05:53 PM.

  23. #4463

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by Ravel View Post
    Maybe in the mc3k there could be an option to start the next step of all the cycles
    only when all the active slots have achieved their resting time ?
    I suppose the idea is intended with the same program running on 2 to 4 slots (similar batteries).
    In that case the resting time programmed in all the slots is in fact a minimum,
    some batteries may be experiemcing longer durations, but one may not care.

    The other possible implementation, whichever slot reaches first its spent resting time,
    would command going to the next step (next cycle) for ALL slots.

    Do I make sense ?
    Regards
    Thanks for the vague suggestion but imho it is not viable or not acceptable in the end for 3 reasons: it is complicated, the implications are complex, and even if i kinda understood it at the date of posting (2017-02-11), i've forgotten how it should work how it functions by today (2017-02-14) and i would need to think hard again to make sense out of all of it; an option in SPV (which concrete option with parameters?) for such a control-related function would clutter up SPV which is to comprise rather algorithm-related functions, it simple would not fit in between; last but not least we can dismiss it because you can ask squirrel doesn't dig it


    On the other hand, i do like in general the idea of the user control function 'Pause' in form of a key press. It would empower the user to take own control over the pausing not let the machine take over automatic control after some implemented scheme which not everybody agrees with or needs or wants.

    @everyone, assuming that the implementation is doable and the implementation result great as intended, would you welcome a 'Pause'-button, do we need or want this? If yes, how about the <STOP>-key, a short-press ("click") on <STOP> in DDV/SOV? (As you remember from the Cheat Sheet, a long-press ("press-and-hold") on <STOP> in DDV/SOV results in 'Finishing' the slot program prematurely.)
    So if someone accidentally clicks the key in DDV or SOV, nothing bad will happen, no slot will be finished/stopped/reset/etc; he can then press the 'Unpause' key and all paused slots will continue. For the 'Unpause All'-key we could probably use the <ENTER>-key and only in TOV. (Pressing <ENTER> in DDV/SOV means 'Return to TOV', as you remember.)

    So. This is my own concrete idea of implementing a <PAUSE>-button, and in a vote (What's the vote question? Lol) i would vote Yes for it

    Actually this is now an offer. If you don't need or want manual pausing and or don't like my idea of its implementation, then please say so. If you don't say anything for example because you don't mind or care, then i'll count it as a Yes (Lol again).

    haha

    ha.
    Last edited by kreisl; 02-14-2017 at 04:35 AM.

  24. #4464
    Unenlightened
    Join Date
    Feb 2017
    Posts
    1

    Default

    Hi @All,


    In the last weeks I read very much about the different Chargers an I decided to buy the MC3000 (FW.1.13).
    I have one Question and i hope to be right here to get some help.

    At Home i have some old NiMh/NiCd Accus (no LSD) and i want to check, refresh and reform them.
    To save some time, i decided to use the mode "Cycle" with a C.Current of 8Hours@0,2C instead of the recommended 16Hours@0,1C.

    These are my settings:

    Mode=Cycle
    CycleWay=D>C
    CycleCount=3
    C.Current=0,2C
    D.Current=0,2C
    EndChargeVolt:1,65V
    EndDischargeVolt=0,9V
    ChargeRestTime=20 Minutes
    DischargeRestTime=10 Minutes

    The Problem is, that the -deltaU Termination does not work correctly with a C.Current below 0,3C......
    To match the Termination of the charge process at 1,6C, i have to set the CAPACITY to 1,6C or the TimeProtection to 8 hours.
    When i use one of these two settings, the whole Cycle Program terminates when one of these values matches (there is no second Cycle).

    What should i do, that the Charger can match my Requirements?
    Sorry for my English, but i hope you can understand my Feature Request.


    Regards
    Christian

  25. #4465

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by buss78 View Post
    Hi @All,


    In the last weeks I read very much about the different Chargers an I decided to buy the MC3000 (FW.1.13).
    I have one Question and i hope to be right here to get some help.

    At Home i have some old NiMh/NiCd Accus (no LSD) and i want to check, refresh and reform them.
    To save some time, i decided to use the mode "Cycle" with a C.Current of 8Hours@0,2C instead of the recommended 16Hours@0,1C.

    These are my settings:

    Mode=Cycle
    CycleWay=D>C
    CycleCount=3
    C.Current=0,2C
    D.Current=0,2C
    EndChargeVolt:1,65V
    EndDischargeVolt=0,9V
    ChargeRestTime=20 Minutes
    DischargeRestTime=10 Minutes

    The Problem is, that the -deltaU Termination does not work correctly with a C.Current below 0,3C......
    To match the Termination of the charge process at 1,6C, i have to set the CAPACITY to 1,6C or the TimeProtection to 8 hours.
    When i use one of these two settings, the whole Cycle Program terminates when one of these values matches (there is no second Cycle).

    What should i do, that the Charger can match my Requirements?
    Sorry for my English, but i hope you can understand my Feature Request.


    Regards
    Christian
    Please sera first page of this thread, link to Idea oncapacitynext

  26. #4466

    Default

    Quote Originally Posted by buss78 View Post
    Hi @All,
    At Home i have some old NiMh/NiCd Accus (no LSD) and i want to check, refresh and reform them.
    To save some time, i decided to use the mode "Cycle" with a C.Current of 8Hours@0,2C instead of the recommended 16Hours@0,1C.

    Christian
    See Re: Crystal removal in old NiMH batteries http://www.candlepowerforums.com/vb/...NiMH-batteries

    IMHO, it seems that for OLD you will either revive them after 1 to 3 cycles,
    I mean back to prestine state, that is lucky to have performance > 80% than their initial capacity,
    and the baterry would charge and stop normally on dV criterion alone.

    OR, you will revive them (1 to 3 cycles also), to the so-called CRAP state, see in the forum,
    but many cycles will not lead to lots (or any much) improvement.
    Batteries will be functionnal though with capacity <80% and sometimes/often the only way to charge them
    without overcharging is to work on a capacity cut criterion.

    I have as example a set of 4 AA NiMH 2300 mAh
    They work reliably on a charge of 1400 mAh (any more and this gets lost while charging and would probably damage further the AA)

    Try to discharge your lot and charge them to half capacity, and give us the internal resistance of those baterries
    (+ all details of wahth they are, brands, capacity, model), and even better an internal resistance of a not so old
    comparable batterie. One may tell you if they are near busted.

    You want to save time : maybe not always feasible (cycles implementation seems ok only for good baterries)
    See also my previous post

    Also not even sure you are goinf the right way by ''reforming by going 1,6 C''
    Cycling full - empty - full may be enough, see the link at the top of this post

  27. #4467
    Flashaholic*
    Join Date
    Nov 2011
    Location
    north carolina
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    697

    Default Re: 2nd gen dreamcharger presented on IFA Berlin 2014…

    ok, so i bit the bullet and got one of these today
    so far not too bad figuring it out
    your not going to do it in 1 night, thats for sure!
    only let down was the 1 amp max discharge , with 4 18650s
    i was thinking it was 2 amp
    oh well
    the 3 amp charge for 4, 18650s is what sold me on it mostly
    ive got a pile of 3500mah, SANYO NCR18650GA batteries to run thru this thing
    what would you guys consider a safe charge rate on these?
    can i max it out at 3amp per channel and be ok, doing 4 of them at a time ?
    also, what should i set my low volts for when discharging, around 3 volts or so?
    Last edited by hahoo; 02-18-2017 at 04:54 AM.

  28. #4468

    Default Re: 2nd gen dreamcharger presented on IFA Berlin 2014…

    Quote Originally Posted by hahoo View Post
    ok, so i bit the bullet and got one of these today
    so far not too bad figuring it out
    your not going to do it in 1 night, thats for sure!
    only let down was the 1 amp max discharge , with 4 18650s
    i was thinking it was 2 amp
    oh well
    the 3 amp charge for 4, 18650s is what sold me on it mostly
    ive got a pile of 3500mah, SANYO NCR18650GA batteries to run thru this thing
    what would you guys consider a safe charge rate on these?
    can i max it out at 3amp per channel and be ok, doing 4 of them at a time ?
    also, what should i set my low volts for when discharging, around 3 volts or so?
    I would recommend that you go to this website and find out all of the data on your battery first and it will give you all the information you asked for.

    http://lygte-info.dk/review/batterie...comparator.php

  29. #4469

    Default Re: 2nd gen dreamcharger presented on IFA Berlin 2014…

    Quote Originally Posted by hahoo View Post
    ok, so i bit the bullet and got one of these today
    so far not too bad figuring it out
    your not going to do it in 1 night, thats for sure!
    only let down was the 1 amp max discharge , with 4 18650s
    i was thinking it was 2 amp
    oh well
    the 3 amp charge for 4, 18650s is what sold me on it mostly
    ive got a pile of 3500mah, SANYO NCR18650GA batteries to run thru this thing
    what would you guys consider a safe charge rate on these?
    can i max it out at 3amp per channel and be ok, doing 4 of them at a time ?
    also, what should i set my low volts for when discharging, around 3 volts or so?
    4 18650 is 1 amp max discharge, 1 18650 is 2 amp max discharge
    it is ok (for the device) to max it out at 3amp per channel, doing 4 of them at a time
    i would not charge ncrga with 3 amp or r u in such a hurry tonight
    why do you want to discharge? to determine max capacity you can set your low volts to 2.50V
    3 volts is too conservative, flashlights also discharge below 3.00V
    can i use my smartphone as screen for raspi 3B through bluetooth 4.1 (BLE) or does it have to be wlan?

  30. #4470
    Flashaholic doctordun's Avatar
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    Jan 2006
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    Red Oak, Texas
    Posts
    301

    Default Re: 2nd gen dreamcharger presented on IFA Berlin 2014…

    Placed my order with GearBest two days ago. Not a moment too soon. Website shows out of stock now.

    Any experience on how long the order might take before I get it here in Texas?

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