This part of IEC 62840, which is an International Standard, gives the general overview for battery swap systems, for the purposes of swapping batteries of electric road vehicles when the vehicle powertrain is turned off and when the battery swap system is connected to the supply network at standard supply voltages according to IEC 60038 with a rated voltage up to 1 000 V AC and up to 1 500 V DC. This document is applicable for battery swap systems for EV equipped with one or moreÿ swappable battery system (SBS), or removeable battery systems(RBS). This document provides guidance for interoperability. This document applies to: " battery swap systems supplied from on-site storage systems (for example buffer batteries etc); " manual, mechanically assisted and automatic systems; " battery swap systems intended to supply swappable/removable battery systems having communication allowing to identify the battery system characteristics; " battery swap systems intended to be installed at an altitude of up to 2000 m. This document is not applicable to: " aspects related to maintenance and service of the battery swap station (BSS); " trolley buses, rail vehicles and vehicles designed primarily for use off-road; " maintenance and service of EVs; " safety requirements for mechanical equipment covered by ISO 10218 series; " locking compartments systems providing AC socket-outlets for the use of manufacturer specific voltage converter units and manufacturer specific battery systems; " electrical devices and components which are covered by their specific product standards; " any fix-installed equipment of EV which is covered by ISO; " EMC requirements for on-board equipment of EV while connected to the BSS.