I do not know the exact electrochemical reactions which make a battery work, but I understand that the essential anatomy of a battery is a cathode and an anode separated by an electrolyte, and the anode absorbs electrons. When the battery is connected to a wire, the electrons move from the anode tot he cathode, producing a current. I have two questions. Due to the electrical potential difference, it would follow reason that the electrons would accelerate toward the cathode when a wire is connected. If this is the case, then how is there a constant current in the battery if current is defined by dq/dt (change in charge over time)? Secondly, what is the difference between two batteries of different voltage? How is the electrical potential difference lowered or increased? (more of an engineering question) Thanks in advance for responses. I am new to to these forums and hope to learn as well as contribute.