I would like to know if Futaba has engineered a system to install two batteries in a failsafe mode. In other words to ensure that if one battery goes down, for any reason, the other one will support the system.
If Futaba doesn't provide any solution, I am sure some of you normally fly with two batteries.
How do you set it up?
Thank you for your suggestions

Plug another switch into an open channel on the reciever just like you did on the first battery. That's it. If you do not have an open channel slot, put the battery and switch on a Y with a servo on a channel. Do not but both batteries in a Y on the battery input of the receiver, If the Y fails, your really hosed.

Hope this helps.

Here is a pic of what I typically do when running a Duralite setup.



Jason

Thank you for the explanation. I did not think it was this easy. But now that I have you, maybe you can help me with the following two additional doubts.
Suppose I plug in two nic-cad 1700ma 6V batteries into two channels of the same receiver through two dedicated swithces (I fly a Futaba T9ZAP with 1024 receiver).
1. Will I need to install also the voltage regulators? (I know that Duralite batteries can shoot up to 7.5 Volts, but also he nics at full charge may go up to almost 7)
2. The two batteries will discharge at the same rate ? Or the second will start when the first is dead ?
3. Don't you think that with usage this amount of voltage will inevitably damage the very thin circuits of the receiver and lead me to an unexpected crash?

I would really be gratefull if you could answare to these questions and I hope you will someday be able to join us for a nice flight in Italy

Ciao

1. Regulators were in the picture as an example. Was the only picture that I could find fast. No real need unless your voltage is really high.
2. In theory, the reciever has no way of knowing which channels have a battery on them and which channel to draw from first. Thus they would be drawn from at the same time and at the same rate.
3. Dual battery setups have been used for quite some time. I do not think that you need to worry as even digital servos do not draw enough to burn the reciever. It is possible, but not likely.

Hope this helps. Maybe others here can give more than my limited knowlege.

Jason