G'day Mate,
I'm not going to argue, I am using the method of 2 batteries & 2 switches, but different capacities, NO problems at all, there would be a problem if I used different voltages, the higher voltage pack would try to charge the lower voltage pack, but the thing to remember here, is that you should never let a battery pack or packs, discharge to a low level, we MUST keep a watchful eye on them, no matter what we have, & the fact that with this method, we now have 2 current paths to the RX, so if an open circuit happens in a switch or battery pack, we have REDUNDANCY.
And that is useful in any plane, whether it is 2.4Ghz, or any other radio frequency.
The bottom line is, the RX MUST have a good power supply, or the plane in question will meet an untimely end.
And it matters not, how we achieve that power supply.
I hope everyone has a great weekend of flying.
Safe flying is no accident.