8 x Rayovac Extra 312 Hearing Aid Batteries

We are an authorized importer and distributor of Rayovac hearing aids. The batteries come directly from the manufacturer, which guarantees freshness and the highest quality of the batteries sold.

RAYOVAC EXTRA is the most recommended hearing aid faucet. They are considered to be one of the strongest on the market. They have a very good reputation of users, they are praised on discussion groups.

Rayovac zinc-air batteries are very high capacity while maintaining a low battery weight. They tolerate high current discharge well. In addition, they provide a very stable output voltage throughout the battery life cycle - not without significance for many medical devices.

Batteries have the highest energy density of all mini batteries (3x higher than silver batteries and 5x higher than alkaline batteries). In addition, the batteries work properly in a wide range of temperatures: from -10 to 50 degrees. C.

The faucets are among the most capacious on the market.

The perfect choice for those looking for the highest quality battery for their hearing aid.

Each battery is packed in a special protective packaging that guarantees tightness - all so that the product reaches the customer as fresh as possible, with full utility values.

Hearing aid batteries are universally numbered and colour-coded:

• Size 10 / PR70 - always have yellow markings on blisters and multipacks (dimensions: 5.8 x 3.6 mm)
• Size 13 / PR48 - always have orange markings on blisters and multipacks (dimensions: 7.9 x 5.4 mm)
• Size 312 / PR41 - always have brown markings on blisters and multipacks (dimensions: 7.9 x 3.6 mm)
• Size 675 / PR44 - always have blue markings on blister packs and multipacks (dimensions: 11.6 x 5.4 mm)

Why choose Rayovac Extra hearing aids?

• Excellent compatibility and current efficiency - Rayovac Extra batteries will work well in any hearing aid, they also work with modern hearing implants and sound processors!
• High Accumulated Charge Density - the most capacious of all button batteries on the market, up to 5x more energy compared to alkaline cells.
• Excellent lifespan - batteries stored in their original packaging, remain fully usable for several years! Rayovac Extra batteries can be purchased in stock, their nominal lifespan is 4 years.
• Environmentally friendly - Rayovac Extra batteries do not contain mercury.

How to fully appreciate the advantages of zinc-air technology?

• After removing the protective sticker, wait at least approx. 2 minutes before the battery is started in the device. This time is needed for oxygen to penetrate the battery structures - only then does the battery activate and reach the appropriate voltage for operation. During battery operation, care must also be taken to ensure that the battery compartment is able to penetrate the air further.
• Batteries will last longer if they come from fresh production (long shelf life) and are stored in a dry and cool place (avoid storing batteries in hot places and cold places, e.g. in the refrigerator - this reduces the lifespan). In addition, it is worth remembering to turn off the camera at night and when it is to be unused for a long time. It is also recommended to leave the battery compartment in the camera open at night - this will prevent moisture from settling in it, which has a bad effect on the batteries.
• Beware: use of batteries other than zinc-air batteries (alkaline batteries are much weaker and may spill). Avoid keeping dead batteries in the camera or mixing batteries of different brands or new batteries with old ones - always replace the entire set. Also, do not keep the battery loose together with metal objects.
• What shortens battery life: higher level of gain in the camera, inclusion of additional functions, being in noise, prolonged talking on the phone (by the ear), high humidity, high or low temperatures, air pollution.