Binos
If it's a Li/on battery, it doesn't suffer from 'memory' and there should be no problems with partial charge/discharging. I have two laptops, both with Li/on batteries and have never bothered to fully discharge either. Plug 'em in when I'm near the mains, otherwise run 'em on battery until they warn of low charge. The handy thing is that they warn you BEFORE they go flat so you can save and switch off. You can check battery state, of course, by hovering the mouse pointer over the battery icon on the task bar which should show % remaining. Enjoy.
