Same Problem here with the Logitech Cordless MediaBoard Pro(TM). That's a bluetooth one.
Ubuntu detects it as a laptop battery and shows the correct percentage until the keyboard drops the bluetooth connection for saving energy. Then it goes down to 0%, I get an empty battery warning and the computer goes down to standby immediatly.
Same Problem here with the Logitech Cordless MediaBoard Pro(TM). That's a bluetooth one.
Ubuntu detects it as a laptop battery and shows the correct percentage until the keyboard drops the bluetooth connection for saving energy. Then it goes down to 0%, I get an empty battery warning and the computer goes down to standby immediatly.