It’s the voltage.

An “Alkaline” AA cell is 1.5v at new and it slowly tapers off as it discharges.

A “rechargeable” AA is 1.2v fully charged, and stays there until about 30% charge (IIRC, it’s been decades since I used them) then the voltage falls off a cliff.

From that you can see that a device that uses two AAs is designed to run at 3v, but when you use rechargeables, they only kick out 2.4v.

(They’ll do that 2.4v for a lot more AmpHours than the alkaline can do their 3v, and can be stuffed full of electrons to do it over and over again though)

Like everything in engineering it’s about the right tool for the job. 💛

Urgh, no. I have ADHD, I get prescribed methylphenidate hydrochloride. I take it because it makes my brain work a little better.

At a recreational dose though? No. Urgh, fuck no. The comedown was fucking awful. Zero appetite, can’t sleep, can’t think properly, just why? 💛