How can we help you? How is the stair lift powered? 1 out of 2 found this helpful Our stair lifts are powered by 24V DC batteries which are always charging at the top or bottom landing. Was this helpful? Yes (1) No (0) Category: General Related Questions Is the stair lift noisy? What if my stair lift is on the opposite end of the staircase? Can you install a stair lift outside? Are my stairs suitable?