The worst thing there is, they don't last even an hour in a small lamp where alkaline batteries last 48 hours. I was dazzled by the ease of charging.

They do not perform well. They discharge easily/quickly!
I am updating my review.
From 4 stars initially, to 2 later and now to 1 (if there was a zero, I would give that).
After considerable use in various remote controls and mice.
The process of putting in/taking out batteries every so often makes them incredibly annoying (they last 1/10th of alkalines).
Zero, stay away.

I trusted the few reviews and bought them because I liked that they charge this way.
I put the batteries in after charging them not once, but three times, because every time I removed the USB with the TypeC octopus and plugged it back in, they would start blinking again so they weren't fully charged. So after doing this process, I put the two in an electronic scale.
Within two days, the scale wouldn't turn on. Charged again, put them in, same thing. Well, that's not possible, if I have to charge them every two days, I'd rather plug the scale in, before I had some cheap ones from the market and they lasted a year.
Anyway, maybe they're not suitable for a scale?
I was disappointed.

But as far as Volt is concerned, they perform exactly as stated at 1.5V measured with a multimeter.

They saved me! Very good, I use them in a medical device that is very sensitive to battery voltage. It rejects many alkaline batteries even when new. The rechargeable lithium ones are very reliable and lighter. An "octopus" cable with 4 USB-C is also included so they can be charged from the same USB port.

Update 1/2026: I have bought a total of 24 such batteries, 8 of which are AA. Very reliable, they do not drop voltage, when they are discharged they simply stop working. I had no problem with charging and none of them were defective.