What is out there in redundant receiver battery setups ? I need something that has an output that I can run in parallel into one channel on the receiver or that I could parallel the batteries at the input .

Thanks

Try one of these:

http://www.boomarc.com/en/dualbat-2-...lating-circuit

It doesn't have to be complicated. I've been using this simple setup for several years now. http://www.hangtimes.com/parallel_packs.html

There really isn't anything complicated about using a common cathode diode pair for redundant Rx power. The Booma unit or the Western Robotics Battery buffer perform the same function.
There is also a large thread for those who wish to DIY a common cathode diode pair.

The issue with the Hangtimes configuration is that if a cell (or pack) shorts, it will likely bring downt the entire Rx bus voltage.
Using diode "isolation" will prevent this from happening and protect against both switch failures (open) and pack failures (shorted)
You can also use the dual diode configuration to combine a battery Rx pack in "parallel" with an ESC BEC output; thus if the battery fails the BEC takes over or if the BEC fails the battery takes over (depending on the voltage of the pack and ESC BEC output voltage)

Or you could try OPTIPOWER ULTRA Guard 430 COMBO, which is specifically designed to operate in an emergency situtation

http://www.optipower.co.uk/catalogue...name=OPTIPOWER ULTRA Guard 430 COMBO&cat=-1

Keith

Iv been using the Scorpion power systems backup guard. Piece of mind having it there. The Optipower Guard will be my next choice however.

I have used diodes in the circuit in the past, but now I don't bother with them. I finally came to understand that the possibility of a shorted cell/pack is very remote. Certainly nothing wrong with adding the diodes.

Keep it simple...this is what I have been using for the past two years on my Wind S Pro-
http://hobbyking.com/hobbyking/store...witch%20regula

Hi Neil,
Looks like a copy of the PowerBox sensor switch which is $100.

Niall

Yea , and it has been working for me flawlessly ! It saved me from loosing my plane on one ocassion as one of the lipos powering the system had died... When I landed it had the red led flashing indicating a low voltage condition on that battery... Not bad for a $20 copy ....

Scorpion Backup Guard here. Works great.

/Bo

That appears to be a copy of the PowerBox systems unit, also sold on HK for nearly 4x the cost
http://hobbyking.com/hobbyking/store...ch_Backer.html