ACEY-D300B double-sided automatic battery spot welding machine is an automated welding equipment used for welding cylindrical lithium battery modules such as 14500/18650/21700/26650/32650/32700/33140. The equipment adopts a left-right dual-welding head structure, enabling simultaneous double-sided welding of materials such as nickel sheets and copper-nickel composite sheets. This allows for one-time completion of the positive and negative electrode connections, reducing processes and significantly improving production efficiency and weld quality. It is widely used in battery pack assembly plants, energy storage system manufacturers, power tool brands and OEMs, robot and AGV manufacturers, consumer electronics manufacturers, and research institutions/R&D centers.