- Zinc-air batteries: They are air-activated and typically come in sizes 10 (yellow), 312 (brown), 13 (orange), and 675 (blue). The size needed depends on the hearing aid model.
- Rechargeable batteries: These are the most common type. Most newer hearing aids use rechargeable batteries. These are either built into the hearing aid or are a specific rechargeable type that can be removed and charged separately.
The choice of battery type often depends on the hearing aid's design, power requirements, and user preference for convenience or maintenance.
