Single-use battery Varta 10 PR70 Zinc-Air 3.5mm height 5.8mm diameter

The Varta 10 PR70 Zinc-Air single-use battery is designed for use in hearing aids and other small medical audio devices. With a nominal voltage of 1.45 V, a compact height of 3.5 mm and a diameter of 5.8 mm, this lightweight battery (approx. 0.3 g) delivers stable power in a size compatible with standard PR70 (size 10) hearing instruments. The battery comes in a pack of six cells and is intended for single-use, offering a convenient replacement option for everyday device maintenance.

Advantages

The zinc-air chemistry provides a consistent voltage during operation and a high energy density relative to the cell's small size, supporting continuous use in low-current hearing devices. Its compact dimensions and light weight make handling and installation straightforward, while standardized sizing ensures compatibility with a wide range of hearing aids designed for PR70 cells.

Suitable for

• Behind-the-ear (BTE) and in-the-ear (ITE) hearing aids that accept PR70/size 10 batteries
• Personal sound amplification devices and small audio assistive devices
• Portable low-current medical and health monitoring devices requiring 1.45 V zinc-air cells

Key specifications

• Battery technology: Zinc-Air
• Battery type: Single-use (primary) cell
• Nominal voltage: 1.45 V
• Height: 3.5 mm
• Diameter: 5.8 mm
• Weight: approximately 0.3 g per cell
• Pack quantity: 6 pieces

How to use

Remove a single cell from its sealed packaging shortly before installation to activate the zinc-air chemistry as directed by the manufacturer: peel the protective tab to allow air access and then insert the battery into the device with correct polarity. Ensure the battery compartment is clean and dry before insertion. After installation, wait a few seconds for the cell to reach operating voltage. Replace the battery when device performance decreases or the sound output becomes weak.

Recommendations

Store unused batteries in a cool, dry place away from direct sunlight and excessive heat. Do not attempt to recharge single-use zinc-air cells. Dispose of used batteries according to local regulations for battery recycling. Keep batteries out of reach of children and seek immediate assistance if a battery is swallowed.