CPAP machine

My DW and I both use Resmed Airsense 10 CPAPs. They operate on 24 volt. Our camper does not have 12v outlets by the bed, so some wiring was going to have to be done. I have an inverter that would run both CPAPs, so first thought was to get a 12v gel deep cycle and set it at the foot of the bed with the inverter and run off those. First try showed that there was not sufficient room to set both there. I was still reluctant to run the CPAPs off the camper battery as we can be off grid for several days as we travel. I got 2 of the 12v Resmed bricks, ran an extension cord from the pass through storage into the bedroom area and attached 12v female plugs on 120v type plugs that would plug into the extension cord. I set the battery in the pass through storage area, alligator clip the extension cord onto that, and with it carry 12v into the bedroom area, where the CPAPs plug in. During the day as we travel, I put the battery in the back seat of the truck and charge it with a trickle charger plugged into the truck 120v outlet. It's always charged by Noon. This may be a "round Robin Hood's barn" way of doing it, but it works for us.