I think that the 'locals' need to determine what is best for them. Bans are foolish.
I do see LEDs moving into HID territory, but the LED lighting manufacturers better make sure that they done enough reliability and quality testing.
I purchased several LED cobra type street light...
I don't care to use alkalines in my smoke detectors. After you replaced a few leaky batteries, you'll want to use something better.
I would never use rechargeables. They'll die too quickly and you might not get enough 'beeping' alert to know that they are dead.
I've been using Ultralife...