The Rayovac PR41 / Size 312 Zinc-Air Hearing Aid Battery is engineered for dependable daily performance in most size-312 hearing aids and cochlear implant processors. Delivering a nominal voltage of ~1.45 V and featuring the standard brown colour-coded tab for quick identification, these zinc-air cells offer consistent output and reliable run time when used and stored correctly.
| Battery Type / Size | Zinc-air, Size 312 / PR41 | 
| Nominal Voltage | ~1.45 V | 
| Typical Capacity | ~160–180 mAh (depends on load and device) | 
| Dimensions | Diameter ~7.9 mm, Height ~3.6 mm (size-312 standard) | 
| Mercury Content | No added mercury (Hg 0%) | 
| Colour Code | Brown tab (standard for size 312 / PR41) | 
| Application | Hearing aids and cochlear implant processors | 
| Shelf Life | Up to 4 years (unactivated, in original packaging) | 
| Product Categories | Batteries  | 
		
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