Battery regeneration services;Battery charging services; Consulting in connection with repairs and installation work, namely, technical advice concerning the installation, repair and maintenance of electric or electronic apparatus, equipment and devices used for automated or partly automated industrial operations; Installation and repair of telecommunication apparatus; Installation of electric systems;  Installation of electrical power systems for computer and telecommunications network applications for others; Installation of electrical systems;Installation of photovoltaic cells and modules; Installation of, maintenance of, and technical advice related to the installation and repair of electrical systems; Installation, maintenance and repair of apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; Installation, maintenance and repair of power systems; Installation, maintenance and repair of uninterruptible power supply systems; Installation, maintenance and repair of batteries; Installation, maintenance, and repair of industrial machines and electrical systems for the purpose of increasing the efficiency, reliability and performance of these machines; Maintenance of communications equipment; Maintenance of telecommunications apparatus; Maintenance, installation, and repair of power distribution or control machines and apparatus; Providing information relating to construction; Providing information relating to the repair or maintenance of power distribution or control machines and apparatus; Providing information relating to the repair or maintenance of telecommunication machines and apparatus; Provision of construction advice; Recharging of batteries; Rental of battery chargers; Repair and maintenance of uninterruptible power supplies; Consultancy in connection with all the aforesaid services.