It is virtually impossible to pare down battery types. BTW, BatteryJunction is a great source for batteries (Energizer CR2016/2032's for $.95) No exotics and I've still got:
AA (alkaline, lithium, NiMH) AAA (alkaline, lithium) D CR123 CR2016 CR2032
In a perfect world everything would run on my Eneloops.
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