RE: Turbo Reg and edr 111 setup
In all my years of R/C flying, I have never lost a plane due to a sudden catastrophic battery failure, nor have I ever heard of one. (This is not to say that it has never happened; I just think it is probably very rare.)
A far more common cause for flight failures, (I suspect), is the improper calculation of voltage draw/need; (that, and pilots not checking, or topping off battery levels, after each flight.
I realize that if you are using a123 6.6v (or similar Lithium Ion type batteries), they wonâ€™t register any noticeable drop voltage until they are pretty much completely spent. But the problem of not being able to monitor voltage on this type of battery pack can be remedied by simply topping off Lithium Ion batteries between flights. Taking note of the mAh needed to â€śtop offâ€ť this type of battery will give insight as to how long the batteries can ultimately run an onboard radio system, safely, between charge cycles.
From my own experience, (and those of others I have spoken with who have had similar 2.4gHz incidents); I am of the opinion that nearly all 2.4gHz radio failures were caused by Rx â€śrebootsâ€ť due to low voltage dropping down to, (or just below), the 4v range. This of course most readily occurs because a single Rx pack is used to power the servos through the Rx; (and the battery pack employed is of insufficient voltage and capacity to maintain adequate voltage to both the Rx and servos).
The 2.gHz low voltage reboot problem can easily be avoided by employing one battery source for the Rx, and a separate, (second), battery source to power the servos. The EDR 111 does a great job of facilitating this kind of setup, (for a very reasonable price). But if you are still concerned that one of the two independent battery packs will still somehow suddenly fail, mid flight; a redundant battery setup can easily be made. You simply run twp separate dual battery packs, (one dual pack wired in parallel to the Rx, and the second dual pack setup wired in parallel goes to the servo power input).