I don't know what is typical, but do have one and can share my experience.
The battery life is definitely less than the TrackPad 1 was. My iMac is on every day and gets intermittent usage - nothing really heavy duty. Need to recharge the TrackPad 2 perhaps once a month. The wireless extended keyboard, on the other hand, gets just as much usage but only needs recharging perhaps once every 3 months.
Other oddity about the TrackPad is that the low battery warning message doesn't appear until the battery is at 2%. Not a lot of warning if you don't happen to notice it right away.
But I've gotten used to the above behavior and everything works, so it hasn't been a big bother.