Hello all. I have an Ibanez Sr505, using stock Bartollini (mk1 pups) electronics. I use duracell, expensive batteriest, but their life cannot go over 1 month, sometimes even less. I take good care of the bass, I even rarely play it pluged (never left it unpluged). So... - do these basses really eat up so much battery power? - does the preamp it up battery (for instance, if the bass is crancked up or the pickups are on)?