A device for producing electrolyte flow in a flow-assisted battery comprises a flow assisted battery, a powering device located on a dry side of a battery housing, and an impeller assembly located on a wet side of the battery housing. The flow assisted battery comprises a battery housing, an anode, a cathode and an electrolyte solution, where the anode, the cathode and the electrolyte solution are disposed within the battery housing. The impeller assembly comprises: a shaft, an impeller, and one or more interior magnets, and the powering device and the impeller assembly are magnetically coupled through the battery housing.