How can we help you? When do I need a stair lift? 1 out of 2 found this helpful Each person is different, but when you feel that getting up or down a flight of stairs is a struggle or unsafe, it may be time to consider investing in a stair lift. Was this helpful? Yes (1) No (0) Category: General Related Questions How long do the batteries last? How is the stair lift powered? How do I choose the right stair lift? Are stair lifts safe?