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Installation, maintenance and repair of batteries, battery parts, battery chargers, accumulators, electric power supply, electric power storage, apparatus, devices and instruments for electric power supply, apparatus, devices and instruments uninterruptible power supply, electric power devices, apparatus and instruments, electric power storage devices, apparatus and instruments, electric power systems, electric power storage systems, apparatus, devices, and instruments for the regulation, control and distribution of electricity, apparatus, devices, systems and instruments for the collection, regulation, control and distribution of solar power, photovoltaic systems, apparatus, devices, systems and instruments, power electronics in the form of inverters and charge controllers, battery storage provided as one system, fuel cells, electric charging stations, electric power stations, and battery powered generators of electric power