Many thanks. Right now my Mojo switched off after being in use through line out for less than half a day. So basically I should try to find alternative desktop AC powered solution with similar fantastic sound signature, which I wouldn't need to charge every day. And which doesn't cost as much as Dave.
If you're not switching from portable use and desktop use of the Mojo very often, you can just leave it plugged in to the charger when it's fully charged. This way, when you use it as a desktop solution, the Mojo will still be at full charge since the charging circuit will supply enough power to top up the battery drain.