Abstract: This invention relates to a mobile charging unit (1), particularly for one or more electric vehicles (4), of the type including rechargeable batteries (41), comprising a mobile charging vehicle (2), and a charging apparatus (3), installed on said charging vehicle (2), having, in turn: an energy accumulation group (5), equipped with accumulators (51) for containing energy for charging said electric vehicles (4); an inverter (6), connected to said accumulators (51), comprising a DC-AC-DC converter (62) to convert the direct current coming from said accumulators (51) into alternating current, wherein said inverter (6) is connectable to an alternating current network (9) and is adapted to transform the alternating current of said alternating current network (9) into direct current for charging said accumulators (51); and an internal control system (7), connected to said inverter (6), adapted to control the operation of said inverter (6); said charging apparatus (3) is characterised in that said inverter (6) furth