One aspect of the present disclosure relates to a battery-powered automatic grease gun, which includes: a driving unit including a motor and a gear, configured to provide piston motion to a piston (P); a distribution unit extending from the driving unit and receiving the piston motion, into which the piston is inserted; a grease container assembly coupled to the distribution unit and configured to store grease; and a spray nozzle and a grease nipple, which are a plurality of discharge ports connected to the distribution unit.

A battery-type grease gun capable of being loaded with various grease cartridges is provided. The battery grease gun includes a main body shell. A convergence base and a grease cylinder are provided at a bottom of the main body shell. The grease cylinder is provided with a push rod and a grease cylinder rotary cover. The push rod is provided with a handle, and the handle is connected to a thin and long pull rod. The pull rod extend through a center hole of the grease cylinder rotary cover. A terminal of the end of the pull rod away from the grease cylinder rotary cover is provided with a cylindrical pin, and an opening configured to allow the cylindrical pin to extend through is provided at a center of the outer pressing plate of the sealing ring.

A battery-type grease gun capable of being loaded with various grease cartridges is provided. The battery grease gun includes a main body shell. A convergence base and a grease cylinder are provided at a bottom of the main body shell. The grease cylinder is provided with a push rod and a grease cylinder rotary cover. The push rod is provided with a handle, and the handle is connected to a thin and long pull rod. The pull rod extend through a center hole of the grease cylinder rotary cover. A terminal of the end of the pull rod away from the grease cylinder rotary cover is provided with a cylindrical pin, and an opening configured to allow the cylindrical pin to extend through is provided at a center of the outer pressing plate of the sealing ring.