Zinc air batteries – why or why not?
kurros asked:
Hearing aids primarily use zinc air batteries. But why not another type like alkaline or lithium manganese dioxide? Or the reverse: why cant the inferred benefits of zinc air be applied to larger cells and replace the previous two types? Wikipedia doesn’t tell me anything aside from it being inexpensive to produce.
Hearing aids primarily use zinc air batteries. But why not another type like alkaline or lithium manganese dioxide? Or the reverse: why cant the inferred benefits of zinc air be applied to larger cells and replace the previous two types? Wikipedia doesn’t tell me anything aside from it being inexpensive to produce.
Stephen on June 21st, 2009
The major reason is inexpensive since it use air as an electrode.
Or may be a save of space, you can noted that the capacity of Zinc Air batteries are comparatively larger so it can last longer (for about one week).
The downside is that once the seal is opened, the battery will worn out quickly (because of air electrode) even you don’t drawn the power from it.
It will be perfectly suitable for typical applications like hearing aids.