1) It looks like when charging, the 1Z is always on - i.e. it can't be switched off, and have it charging in off-mode
2) about 2 hrs later it jumped to FULL. I was expecting to see the bars to turn solid one by one to indicate progress of charge but it just seemed to have gone from all flashing bars to FULL after 2 hrs.
I've noticed the same (both 1 and 2) with my 1A.