Forum › Forums › Stairlifts › Bison 80 problem This topic has 0 replies, 1 voice, and was last updated 7 years ago by gillyst. Bison 80 problem gillystMember December 15, 2016 at 3:26 pm Hi we have the bison 80 curved stairlift, we have replaced the batteries, we are getting the beeping as if it is not connected to the mains electric, it is on a charging point but chair will not move any ideas anyone please Viewing 0 reply threads You must be logged in to reply to this topic.