Power cells are more than just batteries. They are the most widely used supplementary power source for audio competition on the market. Power cells are able to store more energy than a typical car battery and able to discharge power quicker for better amplifier performance.
Power cells come in a number of sizes and can either replace your existing battery or be added in addition to the stock battery for more energy storage. Adding a Power cell to your vehicles charging system will allow better amplifier performance and reduce the stress on your vehicles charging system by increasing efficiency.