Battery, battery module and electric equipment

The invention discloses a battery, a battery module and electric equipment, the battery comprises two battery cells and a circuit board assembly, and the two battery cells are arranged side by side and are positioned on one side of the circuit board assembly. Each battery cell comprises an electrode assembly and a packaging bag, the electrode assembly is accommodated in the packaging bag, and the circuit board assembly is electrically connected with the electrode assembly. The thickness direction of the battery cell is taken as a first direction. The packaging bag comprises a first bearing part and a second bearing part which are arranged in a spaced mode in the first direction, and a folding part formed between the first bearing part and the second bearing part. And the packaging bag is formed by folding the packaging film along the folding part and then sealing. And the folding parts of the two battery cells are oppositely arranged. The packaging bag further comprises a top wall, the top wall faces the circ