Attention Battery Rebuilders! ToolkitRC M6D Chargers anyone?

Discussion in 'Gen 2 Prius Technical Discussion' started by ozmatt, Nov 3, 2025 at 5:17 AM.

  1. ozmatt

    ozmatt Active Member

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    Hi all :) previously asked this question in historic battery threads but it never gained much attention so decided to start my own thread.

    So I purchased a few ToolkitRC M6D chargers but having problems with runaway charge, they are just not cutting out, ever. I went for these because they are tiny and capable of 15a discharge rate in recycle mode, attractive proposal!

    Downloaded and installed the latest firmware, cables are 14awg turnigy silicone 250mm long, current settings are 4 amp charge and the lowest selectable "nixx peak" setting of 5mV but they just keep charging to the moon and blowing modules up until the relief valves pop, btw im only testing with low capacity junk modules and very well aware of the impact on modules charging to this point, I have done extensive testing over the last decade with my old chargers but I want to make a nice new test station with maybe 14 channels to get things done more efficiently

    One thing that's not clear to me about these chargers is if the selectable peak (5mV to 15mV ) is per cell or for the complete module, i don't want to give up on them but meh its getting pretty annoying at this stage.

    Has anyone else had a go at these little beauties yet?
     
    #1 ozmatt, Nov 3, 2025 at 5:17 AM
    Last edited: Nov 3, 2025 at 1:12 PM
  2. dolj

    dolj Senior Member

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    I presume you mean millivolts (not megavolts, as written), in which case the abbreviation is 5mV and 15mV respectively. The abbreviation for megavolts is MV.
     
    #2 dolj, Nov 3, 2025 at 9:11 AM
  3. ozmatt

    ozmatt Active Member

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    Yes sorry millivolts is what i meant
     
    #3 ozmatt, Nov 3, 2025 at 1:13 PM
  4. Hayslayer

    Hayslayer Member

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    I have zero experience with, or knowledge about, that charger.
    My suggestion would be to try it using one good module and see how it acts. Consider it a sacrifice to the charger gods.
    A low capacity module with a high IR is going to make the charger go to a relatively high voltage to hit that 4 amp setpoint. Record that voltage and then try it with a good module and see what voltage it needs in order to achieve 4 amps. Usually, when I've seen 4 amps being pushed into a low cap module, it's going to swell like crazy or pop the relief every time or both.

    Yours wouldn't be the first charger model to act stupid irt the delta peak voltage cutoff or whatever it's called. Seems to be a semi-common problem with the hobby chargers when used for the hybrid battery modules.
     
    #4 Hayslayer, Nov 3, 2025 at 3:59 PM
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