Recently aquired a new, beautiful SE HB II Piezo. It had a dead battery when it arrived. Didn't think much of it and replacemed it. That one died in 7 days. Changed that one and it died in 10 days. Play it about 7-9 hours a week. It is stored with the cable unplugged. Does anyone know what could be the issue? I would love to not have to send this back or have the board replaced, I would almost rather just deal with it, but I am pretty handy and adventurous so if it's a easy fix or troubleshoot I am in. I am looking for input.