These hearing aid batteries are characterised by their increased capacity to the standard cells. Technical data: Size: 10 (yellow). Chemical system: zinc-air voltage: 1.4 V. Capacity: 105 mAh. Dimensions (diameter x height): 5.8 x 3.6 mm. These hearing aid batteries are characterised by their increased capacity to the standard cells. Technical specifications. Size: 10 (Yellow) Chemical system: Zinc air trn Voltage: 1.4Vrn- Capacity: 105 mAhrs - Dimensions (diameter x height): 5.8 x 3.6 mm.