Hearing Aid battery Rayovac 1.45 Volt 13 as per photo.
Rayovac batteries are high quality made in the USA and UK
SALE ON, BE QUICK, LIMITED STOCK
NORMALLY AS MUCH AS $9.96
VARTA Type 04606
Reference IEC PR48
Electrochemical System Primary Zinc Air (ZN/O2)
Diameter 7.8 mm
Height 5.4 mm
Weight 0.8 gr
Capacity 310 mAh
Voltage 1.45 V
The full voltage / capacity is achieved until 15 minutes after removing the foil.