I do mine pretty close to elmcannic, you must must must down load the clc info or you will be very unhappy!! i just get control of the car and have the building maintenance guy kill the feed to the elevator disconnect, Now understand this elevator is in back of a building and almost never gets used, if it was a more used elevator i would find a different way to do this. The batteries are replaceable in the UPS and most of the time replacing them will take care of your problems. i have had to replace a whole UPS unit before if i remember right it would not charge the batteries.
