I installed Lubuntu 15.04 and everything is working fine except one annoying feature: battery information is not shown any more.
In Lubuntu 14.10 the indicator is available: http://i.stack.imgur.com/kb2uG.png
But in Lubuntu 15.04 battery indicator is missing: http://i.stack.imgur.com/PGQPm.png
I have now installed two computers with Lubuntu 15.04:
32-bit OS using Software Updater
64-bit OS from scratch
Both of them (and also live session) is not showing the battery info.