Dec 05, 2013, 12:37 AM Registered User Joined Dec 2011 197 Posts No, battery current is 11.84A. I think you need set current limit to 40A.
 Dec 05, 2013, 01:02 AM Registered User So. Cal. Joined Oct 2004 6,979 Posts ...provided that doing so will not exceed the power limit of your load resistor.
 Dec 05, 2013, 08:18 AM Registered User United States, MA Joined Jan 2011 412 Posts You're discharging the pack at 11.8A (it's at 7.4V). The charger is putting that into the resistors at 20A, and using the 4.4V required to get that current. Really, like Mark said, you want to know the max watts the resistors can dissipate. The discharger (if I found the right one on eBay) lists 20A, 4.8-8.4V. I don't know what's going on inside that unit. IF it is a simple resistive load, and can do 20A @ 8.4V, that's 168W. But if it's somehow controlling the current internally, and can only do 20A @ 4.8V, then that's only 96W. It's possible that, as the voltage increases, it alters something internally to reduce the current, so it's 20A at 4.8V, and only 11.4A @ 8.4V (the same 96W). You could measure the resistance across the leads, to find the actual resistance when it's off. Based on your screen, and V=I*R, R=V/I, R=11.4A/4.4V=0.63 Ohms Maybe it measures the same when cold. If so, the odds increase that it's just resistors inside, and that maybe it's not controlling the current flow based on voltage. If we assumed it can handle 168W, and the resistance is 0.63 Ohms, P=V^2/R V=SQRT(P*R)=SQRT(168W*0.63 Ohms)=10.3V to put 168W through your 0.63 Ohm resistors and since V=I*R, I=V/R the current you'd flow would be I=10.3V/0.63 Ohms=16.3A Limits of 10.3V and 16.3A would limit your dissipation to 168W, assuming this is a simple 0.63 Ohm resistive load. This, again, makes several assumptions about the load you're using. Mine are just resistors connected together, I know their power dissipation specs, and I know their resistance. So setting my Regenerative voltage and current limits to avoid exceeding my 400W max was fairly straightforward. Last edited by RedOctobyr; Dec 05, 2013 at 12:45 PM.
Dec 05, 2013, 10:33 PM
Registered User
United States, MA
Joined Jan 2011
412 Posts
Quote:
 Originally Posted by RedOctobyr Can Logview read logs if you've already copied them to your computer? I tried the USB interface last night (with the special isolated-ground cable from my 106B+), Logview wasn't seeing the charger for some reason. Just the removable drive showed up in Explorer. I need to figure out why, but it would be nice if I could simply get it to open the log .TXT files that are on my computer.
I figured it out. In contrast to most computer-related things, you *can't* use the latest Logview from its creators. That version is actually older than what comes on the CD (and doesn't list the 308Duo), and seems to not include the proper USB driver.

Use what came on the CD included with the charger. My 308Duo CD has Logview 2.7.6.510. I uninstalled the previous Logview, then installed the CD version. Then tried installing the USB driver, it told me a more recent version was already installed. OK. Ran Logview, this time it listed the 308Duo, and with the charger connected, I was able to select the proper entry under USB, under Device, "Choose device and port".

Then you can use File, Import Devicefile, and open any saved .TXT file that you want, even one copied to your computer.
Yesterday, 12:55 AM
Registered User
Joined Dec 2011
197 Posts
Quote:
 Originally Posted by vlad_vy iCharger 4010DUO's manual v2.6, page 39 * Channel Regenerative Mode * Charging Battery Battery as the load: 1. In any channel of the charger, MEMORY SETUP→ Discharge→ Regenerative Mode→ To channel, to select Charging battery; then connect the battery for discharging to this channel, and start the discharge program，and this channel will be in discharging stand by status; 2. Connect the battery as the load to another channel of the charger, and start the charge program; the discharging channel is activated accordingly; 3. Press STOP/START button of any channel during the program running process to end the running status.
Tried the Channel Regenerative Discharge to battery, it works great. I had discharge 2s 5200mAh LiPo battery, with discharge current 30A and 40A, to previously discharged 4s 5200mAh LiPo battery.
 Yesterday, 11:01 AM Registered User Joined Nov 2013 3 Posts i got a integy 30 A indi reactor, how do i hook it up to the 4010 to do my bench test ? theres a button on the reactor to start the discharge, do i need to modify the reactor to work with the icharger @Junsi, the menu navigation is horrible, is it possible to remove the "window groups" and just allow the scroll wheel to roll through all options, with a press to modify value...instead of having to choose a group like charge, storage etc and then one has to exit that window to get to something like the start button or amperage setting....would be so much easier that once you scroll through the option on one side of the menu it just continues on the other side BTW love the charger ... i mostly do 2S charging at 10-15 amps (about 2C) but now in combination with my 306B, i can now do 3 batteries at a time....i race 4 classes each racenight, and before i had a 306B and a imax 5A charger and had trouble keeping up between qualifying and mains...but now with 13A on all chargers the batteries are done in a jiffy, and i dont have to run back to the pits before marchalling cause i would need to get my batteries started, at the end of the night i storage charge my batteries, most need to be discharges, which is fast and efficient on the 4010...ditto on the 306B i did a 3 x chg-dchrg-chg cycle on my new saddle packs, 1cell to one port, that way i could discharge with 30A with charger alone...this allowed me to pair up the saddle packs that matched each other the closest...really cool just gotta figure out how to connect the indi reactor, so im not breakigng something in my new 4010
 Yesterday, 11:49 AM Registered User Joined Jul 2012 23 Posts I use an Indy 30. I went inside and bypassed the cutoff/start button. The resistor bolts to it, so I unbolted it, bent to tabs up gently, and soldered directly to it. I left the fan soldered so it would run while its in use. Works pretty awesome.
 Yesterday, 12:26 PM Registered User United States, MA Joined Jan 2011 412 Posts If someone is in their 4010Duo, configuring Regenerative Discharge To Channel, could you tell me the max voltage and max current that the 4010Duo will let you set? It's not in the manual. And I'm trying to make a spreadsheet to help figure out suitable resistances to use with 308Duo and 4010Duo Regenerative Discharging. But I need those values to make the 4010 numbers accurate. Thanks.
Yesterday, 04:53 PM
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Joined May 2011
46 Posts
Quote:
 Originally Posted by RedOctobyr If someone is in their 4010Duo, configuring Regenerative Discharge To Channel, could you tell me the max voltage and max current that the 4010Duo will let you set? It's not in the manual. And I'm trying to make a spreadsheet to help figure out suitable resistances to use with 308Duo and 4010Duo Regenerative Discharging. But I need those values to make the 4010 numbers accurate. Thanks.
40V max and 40A max
 Yesterday, 05:23 PM Registered User United States, MA Joined Jan 2011 412 Posts Thank you Andrew_ZA, I appreciate it.