Manufactured in Germany, the Power One Zinc Air Hearing Aid Battery is mercury-free and designed to be both durable and environmentally friendly. These batteries have a high energy density, exhibiting a nearly flat drain curve, and are made using high-grade and refined raw materials. Benefits include a long shelf life, stability, and high cell voltage.
Each package includes 40 individual hearing aid batteries. Power One batteries feature stainless steel housing to provide protection against corrosion, and a three-fold sealing design and PTFE film technology to increase reliability.
Please note: The manufacturer of the zinc air batteries suggests that once you take the tab off of the battery, allow 2 – 5 minutes before closing the battery door on your hearing aid for maximum usage.
How They Work: Zinc-air batteries use oxygen to produce electrochemical energy. Oxygen becomes the cathode reactant, and is diffused directly into the battery. The air cathode uses an aqueous alkaline electrolyte to catalytically promote the reaction of oxygen, but is not depleted or transformed at discharge. The cathode is compact, but has an almost unlimited capacity, and achieves high energy densities due to the additional volume available for the zinc anode.
Additional Information: Zinc-air batteries are ideal for products like hearing aids. Available in a variety of shapes and sizes, they have an open-circuit voltage of 1.4 volts, and 1.15-1.35 at 20 degrees Celsius. Developed during fuel-cell research for the space program, the efficient cathode of these batteries has since evolved with fluorocarbons becoming a polymer class. Many variables affect power, including the type of separator system, electrolyte, cathode catalyst, and regulation of gas diffusion. Zinc-air batteries can be made for high rate applications, which have a short life but high output, or low rate, with low power but lasting a long time. Gas diffusion must be regulated to control environmental tolerance versus the demand for power.
- Premium Long Life Zinc Air Hearing Aid Batteries
- 57 cents per battery – Best Price On The Best Batteries!
- Shelf-life loss of less than 2% per year when stored at room temperature