How does the LTC4123-based solution benefit hearing aid applications? Small primary cells such as Zinc-Air hearing aid batteries need to be removed and replaced often, and for those people with manual dexterity issues, this may be problematic. The LTC4123-based rechargeable NiMH cell powered solution offers the best solution by offering a very safe chemical alternative to Zinc-Air batteries with a simple inductor-less single-IC configuration, resulting in no need to remove the batteries.