never heard of something like that, alkaline last longer, start with much higher voltage, and can store more charge, as long as you dont consume it(unless you android or cyborg), i dont see its downside.

nah, a good circuit will limit current flow, wont be like when fuel max, car run faster, when fuel low car run slower.

was comparing alkaline with rechargeable, battery to battery, from what i know it can be done in a very tiny soc, lets say regulate all incoming voltage more than 1.0v to 1.0v, so you put in new battery 1.6v or rechargeable 1.2v all regulate to 1.0v first b4 the chip start functioning. so as long as your battery still have charge more than 1.0v, will still work.