How much water should you drink every day? It might not be as much as you think. Get the facts about hydration, beauty and health.
1. Battery is a source of energy for a circuit, whereas capacitor is a passive element, which draws energy from the circuit, store and release it. 2. Usually battery is a DC component, whereas capacitor is mostly used for AC applications. It is used to block DC components in circuits.
Already many good answers, but I would like to add this one to show how electrophysiology makes it more confusing. Compare a battery with a stimulator - a device used to stimulate excitable tissues such as nerves or muscles. Both have an anode and a cathode. -----------------. BATTERY. A battery is a charge-separating device. It stores electric energy by separating cations (positively-charged ions) and anions (negatively-charged ions). One terminal of the battery contains an excess of cations: this is the positive terminal (cathode).