9
Transformers [electricity]; Distribution transformers; Electronic transformers; Electric voltage transformers; Electric current transformers; Mains transformers (Electric -); Capacitive voltage transformers; Impedance transformers; Accumulators, electric; Battery jars; Chargers for electric batteries; Push-on accumulators; Batteries, electric, for vehicles; Batteries for electric vehicles; Voltage transformers; Voltage converters; Voltage regulators for electric power; Batteries; Rechargeable batteries; Batteries, electric; Lithium ion batteries; Battery compensation chargers; Battery adapters; Car batteries; Batteries for vehicles; Charging stations for electric vehicles; High voltage transformers; High-voltage power supplies; High voltage capacitors; Rechargeable electric batteries; Electrical cells and batteries; Rechargeable cells; Fuel cells; Nickel-cadmium batteries; Lithium batteries; Chargers; Battery chargers; Invertor controllers; Car charger; Supercapacitors for energy storage; Ultracapacitors for energy storage; Electricity storage apparatus
37
Recharging of batteries and accumulators; Recharging of batteries; Vehicle battery charging; Charging of electric vehicles; Replacement of accumulators
39
Storage of energy and fuels; Storage of electricity; Distribution of energy; Arrangement of the storage of fuels; Storage of electrical plant; Storage