electric and electronic measuring instruments, namely, sensors to measure the charging status of batteries, temperature of batteries, capacity of batteries, insulation fault of batteries, charging distribution within a battery or battery network, insulation fault of charging harnesses and current consumption, with and without electronic analyzing apparatus to evaluate the measured parameter, respectively; residual current sensors; electric loss indicators; electric loss indicators, namely, insulation fault locators, current relays and voltage relays; devices and instruments, namely, insulation meters for monitoring and measurement of electricity supply and insulation with or without switching function; circuit breakers; residual current circuit breakers; voltage surge protectors; ammeters; ohmmeters; voltmeters; electricity meter; chargers for electric batteries; charging stations for electric vehicles, and parts; battery charging controller; electronic accumulator monitoring devices for electrical vehicles; onboard battery charging controller for electrical vehicles; electronic monitoring devices for power circuits of vehicles