I just picked this bass up recently as a replacement for my MIM Pbass and I love it. I used it at the latest gig I had and I got tons of compliments from people on my sound. I have a few questions about it though since I've never had a bass with any sort of active electronics. About how long should I expect the battery to last? I play an average of at least 2-3 hours a day. Also, the actual pickups are passive(EMG-HZ's) so does that mean if the battery dies only the onboard preamp will stop working?