9
Transformers [electricity]; Distribution transformers; Electronic transformers; Voltage transformers; Electric voltage transformers; Electric current transformers; Mains transformers (Electric -); Electronic power transformers; Capacitive voltage transformers; Impedance transformers; Step-up transformers; Battery jars; Batteries; Rechargeable batteries; Batteries, electric; Lithium ion batteries; Battery chargers; Battery adapters; Batteries for vehicles; Car batteries; Power units [transformers]; Power units [batteries]; Condensers [capacitors]; Electric batteries for powering electric vehicles; Voltage converters; Voltage regulators; Voltage regulators for electric power; Fuel cells; Rechargeable cells; Lithium batteries; Charging appliances for rechargeable equipment; Chargers; Chargers for electric batteries; Invertor controllers; Batteries, electric, for vehicles; Batteries for electric vehicles; Mains testers (Electric -); Supercapacitors for energy storage; Ultracapacitors for energy storage; Lithium secondary batteries; Battery compensation chargers; Electric-car charger; Car charger; Charging stations for electric vehicles; Battery terminals; Branch terminals; Terminals [electricity]; Electric car charging piles
37
Recharging of batteries; Recharging of batteries and accumulators; Vehicle battery charging; Charging of electric vehicles; Assembling [installation] of storage systems
39
Storage of energy and fuels; Storage; Storage of electricity; Arrangement of the storage of fuels; Storage of electrical plant