TurboReg with different battery sizes
I have always been using my TurboReg with 2 identical batteries. For my next project, I'm trying to save as much weight as possible and would like to use 2 lipos of very different capacity to have one main battery and one smaller backup. This is for a jet application. I'm thinking about using 1 2000mah main battery and add a 500-800mah backup battery.
From what I understand, the TurboReg will draw current from whichever battery has the highest voltage. So am I right to assume it will draw current from both the main and backup battery, until the small backup battery voltage drops faster than the main battery in which case the main battery will be used?
Is this correct? Do you think the setup above is an advisable application?