Hi,
can I use the 220-240V power suply from a 5500/5600 for a C1000?

220V for a north american 5500? Generally a power supply that works for one Z will work for another Z. I'm not sure, but I think the 5500 had a 1amp power adapter and all the newer ones are 2amp. I'm also not sure if the newer Zs generally use more than 1amp so it might or might not be an issue. If it is an issue, it would be if the 5500 was powered on and charging at the same time. I'm pretty sure charging while suspended should be no problem.

5500 in fact has a 100~240V to 5V/2A AC/DC adapter, which seems to be perfect to use with any Zs.
And I'm using it with my C3000.
A bit annoying issue with the power adapter is that if it is plugged in power socket without load, it will make very light abuss noise. While with load, it will be better.

aahh....I might have had the 2amp/1amp thing turned around