Yep, very common with battery power transportation . . . my Segway i2 is the same way.
There is always some circuit powered-on when the battery is installed.
Has too for it to know you pushed the start button.
I always removed** the LE battery when not riding to prevent battery getting so low it can not be recharged.
{On Segway try to remember to charge them every few months - - they don't just pop-out - - }
**mine was stolen . . . so now a have an extra battery if/when I get a replacement LE