Originally Posted by Bonanoob
If you are not using it for long periods of time like months or years, it wouldn't hurt. I haven't really seen a huge drain if you leave it in.
Planet Eclips did really well shutting down parasitic draw on their boards. I received my SL94 in February and the battery showed about 3/4. The only reason why I changed the battery is because I was playing in a tournament and didn't want it to go down on me.
I would reccomend taking the batteries out of any battery powered device if storing for an extended period of time. We have all seen them "explode" or leak acid in some sort of device and this can definitely happen in an Ego.