A portable apparatus (11) for powering and controlling electrical equipment, in particular for agricultural use, comprising a device (12), comprising an electric motor (13) and a tool (14), said device (12) being selected from between a plurality of different devices (12, 12a, 12b, 12c, etc.) with their own operating settings, and by a battery (16) to supply power to said electric motor (13) that drives the tool (14), characterized in that it comprises a unidirectional communication system that is adapted to allow the unidirectional passage of information from said device (12) to said battery (16), said communication system being constituted by a single microcontroller (17), which is provided with a identification means and is coupled to said device (12), and by an electronic control system (21), which is coupled to said battery (16), for the identification of the device (12), said system comprising a of electronic control (21), which is housed inside said battery (16), a system for the active control of the charging and discharging process of the cells (19) of the battery pack (18) and an inverter to manage operating parameters.Un aparato portátil (11) para alimentar y controlar un equipo eléctrico, en particular para uso agrícola, que comprende un dispositivo (12), que comprende un motor eléctrico (13) y una herramienta (14), seleccionándose dicho dispositivo (12) de entre una pluralidad de dispositivos diferentes (12, 12a, 12b, 12c, etc.) con sus propios ajustes de funcionamiento, y por una batería (16) para suministrar alimentación a dicho motor eléctrico (13) que acciona la herramienta (14), caracterizado porque comprende un sistema de comunicación unidireccional que está adaptado para permitir el paso unidireccional de información de dicho dispositivo (12) a dicha batería (16), estando constituido dicho sistema de comunicación por un solo microcontrolador (17), que está provisto de un medio de identificación y está acoplado a dicho dispositivo (12), y por un s
