Your new stairlift will be fitted to your staircase, not your wall so in most cases the answer will be no.
In some instances you may need to have a handrail moved or a window ledge reduced in order to avoid clashes with you new stairlift, in which case some minor re-decoration may be needed after the lift is installed.
There's no need to worry. Your Handicare stairlift is operated by batteries; these re-charge when your Stairlift is left on a charge point. This means your stairlift will continue to work if the power supply is interrupted for a limited number of trips. The Simplicity Series stairlifts will charge wherever they are left on the track.
Audible and visual signals will alert you that your lift is not on a charge point. The power supply to the stairlift should remain switched on at all times. If stairlift batteries are allowed to go completely dead they may need to be replaced.