Isn't their under-load voltage rated at 1.2v? Alkalines start out at over 1.5V and lithiums even higher; I've had some around 1.8V unloaded but the alkalines and lithiums usually state "1.5V" on the battery or packaging and I assumed that was their rated voltage under load.
Well. This is where it gets either very interesting, or very boring, depending on your outlook
Alkies start out at about 1.55V, but under load can drop ridiculously low, so the manufacturers thought "well, lets just stick 1.5V on the side, that's a nice number, it's not the real working voltage, it's the voltage they'll be at for about 10 minutes under a really light load, but hey"
Then NiMH were invented. Despite being interchangeable with alkies, the manufacturers thought "well, let's put a decent load on these that would drag alkies down to about 1V and give about 20 minutes runtime... oh look, our batteries stay at 1.2V. Yipee, lets stamp that on the side!" and hence, NiMH have been forever relegated as "worse" by anyone that doesn't know quite a lot about batteries... "well, they've got to be worse, they've got a lower voltage... innit" (BUT IT DOESNT MATTER!)
Then L91's came out, and thankfully, anyone who knows they exist generally knows enough to know they're at a slightly higher voltage, but again, it doesnt matter!! :thumbsup:
Its possible to go into it even further, but I'm currently loosing the will to live
![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)