On Tue, 15 May 2018 20:50:16 -0700, Leonard Blaisdell
> wrote:

>In article >, Sqwertz
> wrote:
>
>> I have a Logitech keyboard and mouse, both wireless. They're not
>> bluetooth (that I know of), but the AA batteries have lasted over 2
>> years now. I used to have a cordless mouse, some other brand, it
>> wouldn't last 2 months without replacing the battery.
>
>I only surmised. They're Bluetooth on a Mac. I get about three or four
>months per mouse and keyboard. Both take two AA batteries. So that's
>sixteen AA batteries a year at worst. That sounds about right.
>There was a time when I thought AAA through D cell batteries would
>become obsolete. Boy, was I wrong.
>
>leo

Something must be wrong in the mix, don't think I ever replaced the
keyboard batteries, only the mouse occasionally.