Just want some sleep!

Knowing I had a week to live at the new rental home until my household goods were delivered, I tried to fit a twin mattress in my SUV. It was a no-go, so sent tht on with my shipment and bought a twin sized inflatable mattress. I already had the Coleman rechargable inflator, so I figured I'd sleep just fine with the air mattress and a memory foam mattress topper. So I roll into my rental place on Friday night and discover that you actually have to charge the re-chargeable inflator for 10 hours prior to use. Hmmm, I must have forgotten that part since it's been ages since I've been camping. I slept on the memory foam pad and the dog's bed was thicker than mine! Got it all worked out come morning...but lesson learned!