[danaris]

> For almost all devices there is no good reason to care that the nominal voltage of NiMH rechargeable batteries 0.2V lower than the nominal voltage of alkaline non-rechargeable batteries. Alkaline batteries have a steeper initial discharge curve and pretty quickly drop below 1.3V.

The few times I've measured the voltage of my non-rechargeable AA batteries (which, granted, was infrequently, and not recently), I haven't seen them drop below 1.3V until they've been in use a while.

And I've much more reliably observed that when I try to use rechargeables in my electric toothbrushes (Oral-B Pro Clean, the kind with separately moving round and long brush sections, which are, alas, no longer available anywhere I've been able to find), they start out very sluggish, and gradually descend to near-uselessness, while using non-rechargeables makes the toothbrush very energetic at the start, declining fairly steadily over a month or three, with it matching the level of the rechargeable at something like 2/3 of the way down.

I'll take a look at the Wirecutter link; thanks!