Comments on: iMax B6 charger protocol reverse engineered

By: Bjorn

Bjorn — Sun, 24 Mar 2019 23:04:45 +0000

There seems to only be logging available for the B6AC V2, so I started digging into how to start charge/discharge with the new HID interface.

Probably won’t finish deconding the whole protocol, but some of the findings are here at my fork of existing logging code https://github.com/beikeland/imax-b6mini-datalogger/

By: lachs0r

lachs0r — Tue, 12 Apr 2016 01:10:34 +0000

FYI, I just hacked up this (works for newer iMAX B6 Mini chargers): https://github.com/lachs0r/b6mon

By: Niobos

Niobos — Tue, 17 Nov 2015 14:47:05 +0000

I'm assuming that you want to use your own serial-adapter and not use the one that shipped with your charger? In that case, you can just order an "extension cable" (like this one) and cut that in half.

By: Grag

Grag — Tue, 17 Nov 2015 13:49:03 +0000

Hello! Thank you for your project! It is very interesting for me! I have one more question… Where did you get Futaba J-type connector. I also live in belgium but I can say that it is impossible for me. I looked there http://hardware.be/wieland/ as usual I order all hardware here but unsuccesful. i can’t find something appropriate!(

By: Nicolae

Nicolae — Wed, 07 Jan 2015 05:04:38 +0000

Thanks for your work. I was having trouble decoding it.

By: Niobos

Niobos — Mon, 15 Sep 2014 16:36:03 +0000

Yes, you can log to on an arduino as well. You can either just dump the raw serial data, and do all interpretation on the computer afterward. You should however be very careful, because you’ve lost the timing information. A better way would be to log messages with a timestamp (which is a challenge on an arduino without an RTC). That way, you don’t loose any information.

By: tOmki

tOmki — Sun, 14 Sep 2014 21:40:05 +0000

It is the ability to log data on the SD card via arduino, without a computer?
Such a logger plugged directly to the Imax.

By: Niobos

Niobos — Sun, 13 Jul 2014 09:45:13 +0000

Bryan,
The individual cell voltages are just reported by the charger. You obviously need to connect the balance cable for this to work. The data is in byte 44-55.

By: Bryan

Bryan — Sat, 12 Jul 2014 20:04:30 +0000

I’m curious how you get the individual cell voltages? This should be reporting on up to 6 separate cells (S6P1).

By: SimBox.NL

SimBox.NL — Wed, 18 Sep 2013 08:14:35 +0000

Ok, ‘Ah’ it is 😉 looks like i’m using it, but not always.

The ‘extra digits’ do not exist in the data. have the charge & discharge logs both raw and decoded… Did not find any unknown bit to change. Always welcome to check if i’m right.

Until now, i think my list at http://simbox.nl/?p=IMAX+Protocol has about everything there is to know about the Imax B6. (Everyone is welcome to send updates) There are some bits that never left 0, maybe they have something to do with the balancer, dont know about that one.