The invention relates to a piano type stacker device. A motor, an electromagnetic clutch drive system and a cantilever type hook are arranged on a cargo carrying table. A transmission shaft is connected with an output shaft of the motor. A driving part of an electromagnetic clutch is connected with the transmission shaft, and a driven part of the electromagnetic clutch is connected with a chain wheel. The chain wheel is connected with a chain and drives the chain to horizontally move back and forth. A connecting part is connected with the chain, and the chain drives the connecting part to horizontally move back and forth. The cantilever type hook is connected with the connecting part, and the connecting part drives the cantilever type hook to horizontally move back and forth. Hooks for hooking battery handles are arranged on the cantilever type hook. According to the piano type stacker device, a stacker quickly and accurately fetches and places batteries in a hooking mode, the multiple batteries in a battery compartment can be simultaneously fetched out at one time and a part of the batteries can be independently fetched out, the stacker device is convenient and flexible to use, and fetching and placing efficiency is greatly improved.