Thank you for your reply and I'm glad the pictures are acceptable for a "free" service. I have 580EXII already with three sets of fully charged batteries and I have 3 Canon batteries for the 6D (technically for the 7D as well, but I only use it gripped so I can only use 2 at a time). That should provide me enough juice for the day.
I had to shoot for a fire house yesterday. I only brought my 1dmkiii with me, and at the last minute thought to bring my bag of flashes and stands. Turns out when I got the the station for a 7pm shoot it was getting pretty dark so I set up 3 flashes with my Radio popper triggers. As the fire and rescue crew were still showing up I could work on setup. Thing is, I couldn't for the life of me get my flashes to trigger from the camera. I swapped batteries, flipped the dip switches on the receivers and transmitter, now in the dark, couldn't get the things to fire. They got a call in so 2 trucks (part of the picture) and crew left. I figured this gave me some time, but to no avail. Luckily 10 minutes later they radioed in and they told me we would have to reschedule. I recommended we start earlier so that we have some light to work with and went home. Seems my hot shoe switch was dirty or gunged up, so after a bit of frustration and cleaning it seems to trigger 85% of the time. Also one of the triggers went out. Disappointed that Canon no longer services this body as I use off camera flash often for shoots.
Moral of the story, have backups for everything (I have 5 Canon flashes). I should had brought my other body, but the 1d never lets me down ... Until yesterday. It's rescheduled for next Monday at 6.