9 testing machine for batteries; alkaline accumulator and lead accumulator; starter batteries, electric motor vehicle batteries, dry batteries, and stationary batteries; accessories for the above-named accumulators and batteries, namely cell stoppers, water refill stoppers, and water refill devices used for refilling batteries with water; acidity measurers, connection cables, and connection plugs; battery charging devices, namely charging panels and charging cables, battery testing devices; direct current and alternating current converters for emergency power generators and battery charging devices; electrical relays for the foregoing devices; computers and utility programs therefor; data processing machines and computers; operational monitoring devices and steering devices for batteries and accumulators, especially for the unloading (discharging) and charging of batteries and accumulators; power supplies; electrical switching equipment for safety lighting installations; voltage regulators for generators in motor vehicles