ORIGINAL: David Gladwin

Goose, doesn't really surprise me that the F16 has so many power supplies, FBW+ no power= no control and I guess some of those backups are designed to cope with battle damage and still get you home, or even stay in the fight !
Sid, entirely agree but I could go further and say even small GT models should have dual batteries. My little Savex L39 with a Wren 44 is so light I can lift it with one finger, but it, too, has twin Rx batteries !Weight gain is insignificant. Its a bit of a tester too, one battery is a Duralite Lithium Ion the other is a Lipo, both seem to discharge at about the same rate. Both feed the Weatronics 8 channel Smart receiver via Mini Hobby Turbo regulators and JR HD switches, and the log shows DEAD stable voltage, 5.4v, on the rx bus.

Just as interest my larger models are all fitted with Weatronics 12-22 receivers for probably the ultimate in secure power supplies:

1. Twin batteries, one main, one standby.
2. Automatic load test of BOTH batteries on EVERY switch on (7amps for .5 second) An audio visual warning is triggered if the volttage drop exceeds the value YOU set, dependant on battery health and capability, on the software.
3. 8 Regulators distributed ober the servo outputs, all rated at 5 amps continuous, very large heatsink.
4. Battery connection is an electronically ''latched contactor'' so that switch failure/disconnection leaves power connected.
5. Real time audio/visual alert of battery voltage drop/changeover via the telemetry downlink.

Difficult to know how that could be improved on in any significant way. But, never say never, well hardly ever ..... !

Morning coffee finished , back to my SG Hawk.

Regards, (and thank you for your supportive comments , guys, nice to know I am not just a lone voice in the wilderness)

David.