I never seemed to have issues with batteries on my Urge I basses. I tended to leave them in the passive mode.
Funny remark! Kind of like saying, "I never had problems getting water in my ears- I generally stayed on the dock."
Maybe I'm not hip enough to active basses- maybe they still 'juice' in passive mode?
The Artec pre in my Hamer tends to last about 6 gigs, if I don't leave it plugged in.