"3: Theoretical luminance: 5000LM"
Forget ANSI, let's hear your theory on how bright this light might be.
"9: Whole high definition toughened glass lens."
I like this, I always fear only getting half of a lens, I shall rest easy.
"Please note that battery install in right direction. Also, use the same old and new level, the same specification, charge-discharge at the same time, not put it to no person's place for long time and avoid damage.
I'm not touching this double negative. It might not have been in no person's place for a long time.