Double your SAFETY
Double your FUN
No Hassles!

The EDR-108 Pow'R Back'R uses two 6.0 - 7.4V Battery Packs and two Switches to provide Dual-Redundant security to your airborne system, just like in full-size aircraft.

With the EDR-108 Pow'R Back'R, you can tolerate a single failure (open-circuit, short-circuit, low voltage) in either battery pack, or switch, or battery wiring, without losing radio control.

The EDR-108 Pow'R Back'R continually monitors both battery packs and switches for the one with the higher voltage, and routes that to your Rx and servos.

You may combine different size packs. In practice, with two good packs, the EDR-108 draws power equally from both packs, adding their individual capacities.
I.e., if Battery #1 is a 6V/600mAH pack, and Battery #2 is a 6V/1200mAH pack, you will have an 1800mAH power supply onboard, with at least 600mAH to fly on, in case of a failure.  

Tech Note:

Our EDR-108 Pow'R Back'R is STILL the ONLY Redundant Battery system currently on the market that offers TRUE "ground isolation" between the two batteries. 

This means that you can safely use any multi-output charger, or, two DC field chargers connected to the same 12V field box battery, to charge your two redundant batteries thru the switch harnesses, hassle-free. 

Without this feature exclusive to the EDR-108, your chargers may become confused by the "common ground" between the batteries, and the batteries may end up being improperly charged.  We all know what THAT means!

Without our EDR-108?  The only safe way to charge those two batteries is to unplug one of them from the switch harness...  or, use two separate, single-output AC chargers.  What a hassle!

FAQs:

How much current can the EDR-108 handle?

The EDR-108 is capable of handling up to 6 Amps continuous DC, and 20 Amps pulse (20ms ON / 40ms OFF).  That's more than RC system wiring and connectors can handle.  RC connectors are rated to handle a max. of 3 Amps.