Based on this product's specifications, here are some alternatives and similar models
Single-use battery Philips Minicells ZA312B6A/00
Summary description:
Philips Minicells ZA312B6A/00 is a zinc-air single-use battery designed for hearing aids. It operates at 1.4 V and weighs only 0.7 g. Each pack contains 6 batteries, ensuring you have a reliable power source for your devices. The compact button/coin form factor makes it easy to use. Ideal for those who need dependable power for hearing aids.