I'm asking this question for a few people over on the Dude Pit. I know that if I take the battery out of my L-2000 that the bass will still operate in passive mode. Which has me 100% sure that with the battery in and the bass in passive mode that the battery is disconnected and will NOT get drained. But a few people on this particular thread at the DP say that putting the bass in passive mode, while even though it will still operate without a battery, will still DRAIN the battery if it is in. That it doesn't actually disconnect the battery. That doesn't make sense..how could the switch still allow the bass to function WITHOUT a battery, but otherwise drain any battery that is in the bass?