provide direct current through the electrochemical reaction between zinc and manganese dioxide, giving the cell its name. It is a dry cell primary battery, which generates a voltage of approximately 1.5 volts between the zinc anode and the positive polarity carbon rod, collecting current from the manganese dioxide electrode. They are widely used in low-drain or intermittent-use devices, such as remote control, clocks, flashlights, and other portable devices. Here is one of the most popular carbon-zinc batteries of Tiger Head Battery, which you can order now.