How can we help you? What happens in the case of a power outage? 1 out of 2 found this helpful Because your stair lift is powered by 24V DC batteries, it will continue to operate during a power outage. Depending on the model, your stair lift can get anywhere from 10-40 trips per charge during a power outage. Your stair lift automatically charges at either end of the track which means your batteries are always charged and ready for use. Was this helpful? Yes (1) No (0) Category: General Related Questions Are stair lifts safe? How much weight can a stair lift hold? Will a stair lift block my staircase? Can you install a stair lift outside?