In Sleep mode when the transmitter is inserted in either the base or a guitar's output jack, the transmitter must be on so that it can wake up. Because if you strum the strings, the transmitter wakes up. I had to charge my transmitter every couple of days, just to make sure that when I wanted to use it I had sufficient charge. Nothing is worse than plugging in just to realize that the charge is full grained.
I just tried to leave the transmitter half plugged into the base, so I hope it will hold that charge fully, for the 200 stand by hours.
Version 2 should have an on/off switch. Other than this issue, I love not having to run a cable to my pedal board. Nothing better than being able to play on the 1st floor with my rig in the basement. Surprises the hell out of everyone.
Cheers.