He painted mainly Genre subjects in a fashion after Giuseppe Maria Crespi.
He was a pupil in Bologna of Felice Torelli, and he may also have studied with Giuseppe Carlo Pedretti.
Beccadelli's documented work consists of two commissions (1763) executed for the Boschi family in Bologna, depicting Charity of the Capuchin Brothers, Interior with Table, and the Country Dance, in which the landscapes were completed by Carlo Lodi.
In 1763–4 Beccadelli painted the figures in five decorative overdoors representing landscapes, again in collaboration with Lodi, for the Villa Boschi, Bologna.
Late in life, he served on commissions investigating works of art looted during the Napoleonic occupation of the city.