I get the QRP thing if you are on the move but I believe that a car or tractor battery will be around someplace, if not, a perfectly good operating automobile, for power. I have a complete 100 watt, 12 VDC, HF rig with attached LDG auto tuner, in my Radio Bug Out Pack ready to go. Two 100 foot Spools of 14 gauge wire and accessories. The Radio Bug Out Pack also has an 8 watt dual band Handi-Talkie with extra batteries and a charger. I like the option to dial the 100 watts back to less than 10 watts but you never know when you just absolutely need more power. Yes, Some QRP rigs are lightweight but most of the ones I've seen are just about as big and heavy as a regular rig. I don't think that hauling around a huge full blown rig with all the bells and whistles is very smart though. Mine is an Icom 718 with dead audio and I have to use headphones to hear it, but then again, that might be a good thing in order to not give away my position. I don't plan on unhooking my 100% functional Icom 718 if I have to grab and run.