I have now also WhatsApp contact with Toolkitrc..., but somehow they don't seem to really know what the problem could be. They have lots of tips, but I've already tried them all. Otherwise I'm really happy with the M8D, I also did a "comparison" with my Junsi 406, fully charged two 2S LiPos from storage, with the same charging power, apart from 2 minutes both chargers were equally fast and well balanced. Since my Junsi was calibrated by a specialist, I was also able to determine that the M8D was always showing 0.02V per cell less and less, I fixed this by adjusting the M8D.
Then the same thing again, i.e. charged the LiPos, see, the voltages are exactly the same from the Junis 406 to the Toolkitrc M8D. So my Junsi will stay at home in the hobby cellar in the future and the M8D will accompany me to the races....

what did you adjust on the Toolkit to match up with your Icharger?

Im only providing a solution to a problem, not a deep dive of how USB 3 should or shouldnt work theoretically.

For the USB C issue... USB C requires something called power delivery "pd" to negotiate the voltage and current to be supplied. My best guess is the resistors are not there in the charger to "fool" the pd into supplying the 5V. When using a USB C to USB A adapter, the USB A part has a resistor (around 56kohms) on the current line to trick the device giving power to it to give power, or if using a dumb power supply to trick your pd enabled device into charging on that dumb device. So... If you are using a USB C to USB C, just power the charger off your power supply and you can access the folder. If you are using USB C to A it should work, so long as the adapter has the resistor in it. That said, I would not power it externally while connecting to USB A. I don't have confidence that they built in protection for that use.



Inline discharging. I have the .6 firmware, the inline discharging did nothing extra, I was still only able to get 40W discharging. However, during my testing I removed the resistor bank while it was still discharging. I pressed a button on the charger and thought I stopped the discharge cycle but it didn't. And when I removed the resistor the charger kept trying to discharge through the "infinite resistance" so when I plugged it back it it shot up to 30A, and of course the PID controller brought it back down again. But, the charger is capable, they just have to design the firmware right.

You can calibrate the M8D, i.e. the individual voltage for the cells. There are also numerous YouTube videos on how to calibrate Toolkitrc chargers. It's easy to watch them, just enter "Toolkitrc calibration" on YouTube....

Most devices with an USB-C connector for only data communication just use the USB-C connector only to get along with the market, the whole interface behind it is just as any USB2 or even USB1. Also devices that has a USB-C connector for only power are most not designed to do a proper communication on USB-C specification to activate the charger. Like with my Retrogames The Spectrum (remake of the Sinclair ZX Spectrum), one of the most written complains in its FB group is that it will not power up because with the USB-C power connector they forgot to design it with a power/voltage activation for any USB-C charger.

Figured out the ghost touch issue, pull 4 screws under the rubber pads , carefully pull off the top plate , unlock the ribbon connector and carefully remove it remembering orientation, spray it all down with electronics cleaner, let it dry , carefully reseat the ribbon and lock it down then reassemble .

So..., me again ;-)
So, yesterday I decided to send the M8D back to the dealer because I was annoyed that it wasn't recognized by the computer. At the same time I ordered a new M8D from Robitronic, it was €35 more expensive than from the other online dealer, but that didn't matter. Anyway, the new M8D came in the mail today, tried it straight away, the computer recognized it immediately and without any problems.
Now I'm happy with the charger, if it works as reliably over the next few years as my Junsi 406, it'll be perfect

i also can't get either of my PC's to read my charger to update it. i tried usb c to A adapter with no luck at all. on either of my computers. love the charger my first one was DOA but toolkit sent me a Replacement. and used it today at the track. I also have a Icharger Dx6 not sure what one i like the most yet.

My dx6 charges significantly faster , I can't depend on the M8D to finish a charge fast enough running multiple classes.

I mainly got it for a 2nd charger for when I run multiple classes since I use a discharge bank on the dx6.

Tried the inline resistor bank discharge function over the weekend and it didnt seem to be working. Borrowed my friends resistor bank for his x6 just to see if anything happens. It has a total resistance of 0.2ohms which is a lot lower than what Toolkitrc recommends, but I even setting the discharge current to 30A, the charger said was only doing about 2.5A discharge, way lower than the normal 5amps. The resistor bank was ice cold as well. I must be doing something wrong.

Interesting. You don't have a comparison to a Junsi 406 or something like that, do you? I have now charged about 10 batteries in comparison to my Junsi 406, always identical output voltage of the LiPos, sometimes M8D was faster, sometimes the Junsi 406. Difference was 2-3 minutes, depending on how much the cells had to be balanced

Hi guys, has anyone updated their charger to version 3.07 following the new suggestions given by Toolkit? (powering with a 2s or higher / 12v power supply)

1- Press and hold the charger button (back button?) and connect the USB cable to the computer

2- Connect a 2s or higher battery (or 12v power supply) to the xt90 power port

3- download the update package from the toolkit site and extract the file to the computer

4- copy and paste the app.upga file inside the charger

I just updated mine to 3.07 using this process. Same as I posted above, use USB C and power the charger from your power supply. The unit will not turn on all the way, but the USB will get power from your power supply and allow the folder to pop up on your PC so you can drop the file in there. Once you copy the file, power everything off, remove the USB C and power up the charger again, it should be on 3.07.