Seeing as how most chargers won’t be able to fit a 20700 (probably closer to 74mm) plus how hard they are to find and buy, I’m assuming Astrolux are going to include a battery and have built in charging.
I’ve seen an Acebeam and a Manker wrapped 20700. Both were 74mm. The Acebeam review said it was protected, but it didn’t say that on the wrapper. Neither said protected on the wrapper. I think both had button tops, so maybe they did have protection circuits added or maybe just the button tops? IDK. I’m still learning about these cells.