The present application relates to the technical field of electronic circuits, and provides a charge circuit, a control box and a luminaire. The charge circuit includes a control circuit and at least one constant current charge circuit. The constant current charge circuit is electrically connected to the rechargeable battery. The control circuit is used to obtain the specification information of the rechargeable battery, and configure the corresponding charging parameters to be sent to the corresponding constant current charge circuit, so as to charge the rechargeable battery through the constant current charge circuit. As a result, the effect of automatically recognize rechargeable batteries of different specifications can be realized, and meet the situation where the rechargeable batteries of different specifications can be simultaneously charged through multiple channels, which solves the problem that the existing technology of lithium battery charging cannot satisfy simultaneously charging lithium batteries of different specifications.