So I have put the bike away for it's winter sleep with oil change & fuel stabilizer in a full tank, etc. In previous years, I pulled the battery & it sat on a garage shelf with the trickle charger attached. This year I have one of those nifty battery tender chargers with a hookup that has a short cord, fused, with ring lugs you put on the battery & the other end has a two pin plug that goes to the charger or a jumper cable, kinda neat, I think. Anyways, with this setup I decided to leave the battery in, plug up the charger & threw on the cover. My question, is it bad to leave the battery in the bike like this?