Can Robop be run from a car battery attached by a long cable?

We have installed our first site using an external lead acid leisure battery on a long cable. Note that a leisure battery which is designed for deep discharge must be used not a standard car battery which is designed to supply a large current and be immediately recharged. This arrangement works well provided that the regulator (a special part designed and made by us) is mounted on or close to the bird. A mains voltage installation is also possible using our regulator in conjunction with a mains driven 12 volt power supply. Again the regulator needs to be mounted close to the bird. A typical configuration would be to have the power supply installed indoors by the mains socket and run the 12 volts along the cable to the regulator and hence to Robop.