Power One zinc air batteries are made in germany by varta microbatteries. Power One batteries is regarded as one of europe's leading brands. The high and stable voltage level ensures long running times in high power and digital hearing devices. Power One batteries have extra long tabs for easy handling and insertion of the cell into the hearing device. Power One 10 specifications batteries per packet 6 iec pr70 size colour code yellow packaging rotary dial pack voltage (V) 1. 4 chemical system zinc-air typical capacity (mAh) 95 height(mm) 3. 55 diameter (mm) 5. 80.