I have heard mixed opinions on this. I have v551 and a v180 and I have been
told that they are not the type of batteries that need to be run down the
whole way before recharging. But when I first got my 551 and the battery
life was bad, I did just that two times in a row and now the battery life is
pretty good. Can I now just charge it as I go, topping off the battery and
keeping it full?