Back Rest Option A fully charged battery is

A fully charged battery is rated for 50 up/down cycles of the LiftSeat

Height Extension Kit for individuals 6'4" or greater

Users can use the chair in the living room

and wall mounting bracket to use your LiftSeat via battery power all the time

With 2 batteries

Back Rest Option A fully charged battery isBack Rest option recommended for use in bedside configuration (cannot use with bidet) If primarily using your LiftSeat as a bedside commode, we recommend purchasing the back rest to provide a sense of security while toileting. The back rest mounts right underneath the toilet seat on the unit and has 2 adjustable height settings (11 inches or 13 inches. Pad Dimensions are: 9" wide x 6 inches tall x 11 13 inches tall