NOVELTY - The network has a service vehicle (100) e.g. van, transporting a set of battery modules (108) removably mounted on the service vehicle and configured as a source of electrical energy that is transferred to an electric vehicle (EV) e.g. bus, by an EV charging equipment. A storage location i.e. repositionable mobile unit, stores another set of battery modules compatible with the EV charging equipment. The battery modules are manually exchanged between the storage location and the service vehicle such that one of the former set of battery modules is replaced by one of the latter set of modules.    USE - Charging service vehicle network for providing electric energy from a service vehicle e.g. commercial lorry or van, to discharged batteries e.g. 12-V lead-acid batteries such as starting batteries, lighting batteries, ignition batteries or starting, lighting and ignition (SLI) batteries, lithium-ion batteries, nickel metal hydride batteries, nickel cadmium batteries, zinc-based batteries, of an EV or stranded EV e.g. far-away stranded EV and oversized stranded EV such as car (from drawings), in an EV charging field and a roadside assistance field. Can also be used for rechargeable energy storage devices e.g. capacitors, supercapacitors and fuel cells, and for a battery-powered EV and a hybrid petrol EV (HEV), and for a modular energy storage system.    ADVANTAGE - The battery modules are linked to the service vehicle with multiple quick-disconnecting links and contactors to provide user's safety by preventing a set of users from electrical shock exposure or arcing due to improper removal of the battery modules. The battery modules have multiple electrical and mechanical disconnects to quickly replace the depleted batteries with a set of available fully charged batteries. The network provides a quick disconnect system for minimizing the need to wait for a charging system's battery module to be recharged at a charging location or by using an onboard organic charging system/alternator and enabling efficient redeployment of the service vehicle.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a system for providing electric energy from a service vehicle to a set of discharged batteries of an EV.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a service vehicle with a charging system powered by a set of battery modules.    Service vehicle (100)    Internal combustion engine (102)    Alternator (104)    Vehicle battery (106)    Battery modules (108)