I have an electric sliding gate, with a motor powered by 220V.
The problem with this kind of solution is that, when we have a power supply failure, we must remove a screw and open it manually. It is annoying and problematic when my mother (65 years old) must open it alone.
I would like to connect the main power to batteries (using a convertor AC/DC) and the motor to batteries. The problem is that i know that these motors require a high spike of energy to start it up and i would need a kind of capacitors, but i'm not quite sure, if there is already something in the market or if anybody did it already and has some directions for me.