So far, your super-capacitor idea is holding up pretty well for me. A 100 uF capacitor buffered voltage sag to a degree, but the 10,000 uF supercap (1/10 the voltage rating and 1/2 the physical size) gets our setup able to use any given battery voltage measurement without having to consider if the sensors are on or not. (I want to write “Battery voltage measurement fairly close to the aliasing limit of the ADC” but I average a few hundred measurements, so one would expect the optimum result to be nearly invariant. Now we are aliasing across five 0.019V levels instead of ten.). I am curious how the capacitor buffers our pulses when the LiSOCL2 cells are nearing depletion, we’ll tune our deep-sleep cutoff voltage based on that.