I travel on a lot of and have always wondered why Canon did not make a one battery charger (even if only to buy as an accessory). I use more than one battery a day quite frequently, but would be more than happy with a one battery charger if they made one. As it is now, I just travel with the original.
No third party charger is ever going anywhere near my Canon batteries.
+1001 and I'm sure the reason Targus & co. aren't making any aftermarket accessories is because it's such a tiny market. 1D bodies make up such a small number of the overall sales that there's little incentive to create one.
the 1-series dual battery charger is the size of a paperback novel.
I knew it was going to be big, but I was still shocked when I pulled it out of the box. Damn that thing is huge. It's definitely easier to bring 1 or 2 extra batteries instead of the charger. I'm still debating on purchasing a second battery. I'll probably wait until I have the need because my 5DIII will always serve as a back up.
EOS 1D X, 5DIII, M + EF 24 f/1.4II, 50 f/1.2, 85 f/1.2II, 300 f/2.8 IS II || 16-35 f/4 IS, 24-70 f/2.8II, 70-200 f/2.8II || TS-E 17 f/4, 24 f/3.5II || M 22 f/2, 18-55 f/3.5-5.6 IS || 1.4x III, 2x III