123 x Rayovac Hearing Aid Batteries 13 / ORANGE ALSO KNOWN AS: A13, ZA13, 13A, PR48, V13A, DA13, B0134, 13HP, R13ZA, B26PA, DA13H, AC13E, ME8Z, L13ZA, S13A, W13ZA, DA13N6 VOLTAGE: 1.45V Rayovac Batteries Zinc Air hearing aid batteries, with enhanced feature such as stable operating voltage over a wide operating temperature, are uniquely built to offer excellent performance.