Extra Power hearing aid batteries by Rayovac.
These batteries are a ‘white label’ product, manufactured by Rayovac. They are manufactured to the same high standards as other Rayovac hearing aid batteries, effectively the same battery in a different pack and with a lower price!
These batteries are colour coded as well as number coded.
Size 10 - yellow - dimensions 5.8mm diameter x 3.6mm depth
Size 312 - brown - dimensions 7.8mm diameter x 3.6mm depth
Size 13 - orange - dimensions 7.8mm diameter x 5.4mm depth
Rayovac hearing aid batteries can also be supplied in other variations;
Rayovac Proline - mainly supplied by independent hearing aid audiologists - same battery, same quality but usually a little more expensive to buy, also available in an 8 pack which some consider more convenient.
Rayovac Extra - the most commonly supplied variant of Raovac hearing aid batteries, a little more expensive than the white label Extra Power batteries, also supplied in a 6 pack and the most widely supplied hearing aid battery in the UK.
Rayovac Crystal Clear - same Rayovac battery but supplied ONLY for the NHS supply chain. If you see Crystal Clear batteries for sale on eBay it is NHS property being sold. You might want to ask the seller why. Often the top of the pack is cut off which typically states 'Made for NHS', 'Not for Resale' or similar.
We supply Rayovac Extra, Rayovac Proline and Extra Power but DO NOT supply Rayovac Crystal Clear as they are NHS property.
These batteries typically have over 3 years of shelf life on them.