Good question, you are using stacked
batteries, that first of all is dangerous and unadvised in anything other than a regulated device, and they still need to be high drain and high amp batteries due to the sheer amount of power being requested from them. True, the chip does all the work (and I think some of them detect when you are not using the correct batteries and simply will not work above a certain wattage until you replace them with 30 amp batteries) if you have the correct batteries, this is why I provided my list of trusted batteries for these devices first and foremost so there would be no confusion with this topic. They recommend 30 amp batteries to run these things but they know that everyone will be using their china rewrapped 20 amp continuous batteries lol, anyways,
just to try this out I got some of my old ten amp batteries and tried them out and they just kind of petered out and stopped firing around I think it was 60 watts on my sig but it just stopped firing or firing sparodically due to the chip kicking in and saying "no" just like if I keep it at 91 watts on my good batts once they get down to like 40% battery they do the same thing unless I turn down the watts. So yes, the chip does all the work but if you want to be COMPLETELY safe and use the mod in its full functionality then you can only use VTC's if you want to get technical but I have used all on my list in my IPV3 all the way up to 150 (no firmware update on mine yet, new limit is 165 I think) with no issues other than decreased battery life/run time...