1. If you would like to get rid of these banners and the ads within the posts, all you have to do is sign up and they will go away!
  2. Welcome to Rc-Help, are you here looking for the PDF Plans? They are located in the store in the tab above, but you must be signed in to access that part of the site. It only takes a second to sign up!
  3. Like Us On Facebook!
    Hello Guest, it occurred to us during that last server failure that we had no way of informing the members of the site of the failure and I would like to invite you to like us on facebook so that you can get updates if the site happens to go down again. We don't post much over there unless we are updating the members so we will not flood your feed like some places do. Just click on Like and then allow notifications and that's it. See you there soon!

    Click Here To Rc-Help's Facebook page!
    Dismiss Notice
Dismiss Notice
Hey Guest, I see you are not signed up on our forum yet. Did you know Registration is FREE and is only a couple clicks away? You can even sign in from Facebook, Twitter or Google+ for your convenience! So what are you waiting for, CLICK HERE to join in on the conversation!

Chargers Current Draw On Charging Setup

Discussion in 'Electronics' started by bigone5500, Jun 8, 2019.

< Rc-studio / Tool Kit Needed | Charge Box Updated >
  1. bigone5500

    bigone5500 Well-Known Member

    Blog Posts:
    0
    Joined:
    Mar 22, 2017
    Messages:
    2,079
    Likes Received:
    66
    Trophy Points:
    58
    Location:
    Louisiana
    I got to wondering about running my charger setup from my truck on the inverter. I have a Schumacher 750w ac inverter that I think will work if I attach it directly to the battery. So I started by exposing the inner wires of a computer style PSU cord and plugging it into my Dell Z750P-00 power supply which is connected to an iCharger 206B. I connected three 4S LiPos and set the charger to 9.3A. At idle, the current draw is .2A and with the charger at 9.3A charge rate the current is 1.75A. It will be interesting to see what the current draw is with 6 batteries connected. I'll update this thread with that information when I do that.

    20190608_084408.jpg
     


  2. Tony

    Tony Administrator Staff Member

    Blog Posts:
    14
    Joined:
    Feb 21, 2011
    Messages:
    35,813
    Likes Received:
    1,403
    Trophy Points:
    113
    Be careful running those PSU's off of an inverter. If it is pure sine wave inverter, then there are no issues. But if it is a square wave, which most cheaper ones are, and expensive ones as well, that square wave can blow out components. Been there done that lol. Just wanted to give you a heads up. I'm sure you already knew all of this lol.
     
  3. bigone5500

    bigone5500 Well-Known Member

    Blog Posts:
    0
    Joined:
    Mar 22, 2017
    Messages:
    2,079
    Likes Received:
    66
    Trophy Points:
    58
    Location:
    Louisiana
    I knew some electronic devices don't like modified sine waves. However, I did not think of that. Thanks for reminding me. *golf clap*
     
  4. bigone5500

    bigone5500 Well-Known Member

    Blog Posts:
    0
    Joined:
    Mar 22, 2017
    Messages:
    2,079
    Likes Received:
    66
    Trophy Points:
    58
    Location:
    Louisiana
    As an aside, the data collected in this study is kind of interesting to see.
     
  5. Tony

    Tony Administrator Staff Member

    Blog Posts:
    14
    Joined:
    Feb 21, 2011
    Messages:
    35,813
    Likes Received:
    1,403
    Trophy Points:
    113
    Wait, I reminded you of something very important and all I get is a friggin golf clap? I was thinking that deserved a standing ovation or something lmao.
     
  6. murankar

    murankar Moderator Staff Member Armed Forces

    Blog Posts:
    9
    Joined:
    Dec 4, 2011
    Messages:
    8,906
    Likes Received:
    361
    Trophy Points:
    83
    Gender:
    Male
    Occupation:
    Soldier
    Location:
    Eastlake, Ohio
    Sounds crazy to run an inverter to power a psu to convert it back to 12v so you can charge. Why not just hook the charger straight to the battery?
     
  7. bigone5500

    bigone5500 Well-Known Member

    Blog Posts:
    0
    Joined:
    Mar 22, 2017
    Messages:
    2,079
    Likes Received:
    66
    Trophy Points:
    58
    Location:
    Louisiana
    Aw, you take the fun out of it...
     
  8. bigone5500

    bigone5500 Well-Known Member

    Blog Posts:
    0
    Joined:
    Mar 22, 2017
    Messages:
    2,079
    Likes Received:
    66
    Trophy Points:
    58
    Location:
    Louisiana
    I wonder how long a marine battery would last with the 206B?
     
  9. murankar

    murankar Moderator Staff Member Armed Forces

    Blog Posts:
    9
    Joined:
    Dec 4, 2011
    Messages:
    8,906
    Likes Received:
    361
    Trophy Points:
    83
    Gender:
    Male
    Occupation:
    Soldier
    Location:
    Eastlake, Ohio
    Lot longer than it would with an inverter and PSUs.

    Depends on the watt hours of the battery. My 2 6v golf cart batteries are 225 amp hours each. I got about 9 12s cycles with it at high current charge.


    You would to know the watt hours of your packs. Then total that divide that by the marine battery watt hours. That will give you an approximate of how many charge cycles you will get.

    It actually get more complicated than that. That is the simple way. You would have to take into account the amp draw on the source, inefficiencies of the circuit , temperature.

    I say monitor the bank and just use it. Track how many cycles you get. That way you have hard numbers.
     
  10. bigone5500

    bigone5500 Well-Known Member

    Blog Posts:
    0
    Joined:
    Mar 22, 2017
    Messages:
    2,079
    Likes Received:
    66
    Trophy Points:
    58
    Location:
    Louisiana
    That's true. I guess I could do that. I'd hate to connect it to my truck battery and have it drain down too far to crank.
     
  11. Tony

    Tony Administrator Staff Member

    Blog Posts:
    14
    Joined:
    Feb 21, 2011
    Messages:
    35,813
    Likes Received:
    1,403
    Trophy Points:
    113
    Regenerative discharge would save the day there...
     
  12. Stambo

    Stambo Well-Known Member

    Blog Posts:
    0
    Joined:
    Mar 23, 2013
    Messages:
    1,651
    Likes Received:
    74
    Trophy Points:
    48
    Location:
    Whangarei, New Zealand
    We use a thing called a VSR (voltage sensing relay) to connect motor home house batteries to the main vehicle batteries.
    Using one of those you could hook your marine battery to your truck battery, that way it is only connected when the truck is running and charging voltage is above 13.5v.
    While you are parked the marine battery is isolated so you can draw it as low as you dare without affecting the starting battery.
    As soon as you start the truck, the marine battery is being charged by the alternator.
     
  13. murankar

    murankar Moderator Staff Member Armed Forces

    Blog Posts:
    9
    Joined:
    Dec 4, 2011
    Messages:
    8,906
    Likes Received:
    361
    Trophy Points:
    83
    Gender:
    Male
    Occupation:
    Soldier
    Location:
    Eastlake, Ohio
    Amazon has them listed as a battery isolation circuit. I am researching them myself. My solar set up could use one if those to help keep the batteries charged during the winter or while I drive.
     
< Rc-studio / Tool Kit Needed | Charge Box Updated >

Share This Page