Designed specifically for high-power devices, D’Addario 9V batteries deliver up to 9 volts of premium power. Using the latest technology, these tour-grade alkaline batteries provide dependable, long-lasting performance in power-hungry electronic devices. D'Addario accessories is known for innovative, problem-solving, quality musical accessories, offering a complete line of award-winning accessories including cables, picks, tuners, capos, straps, humidifiers, maintenance tools and more.