Isn't that the same "2A" driver found in the newer KD C8's? See post here: https://budgetlightforum.com/t/-/939?page=10#comment-96279 . I also received a Palight C8 R5 (XP-G) with the same driver and it was drawing 2.5A at the tailcap so I replaced it since I was afraid I'd burn out the emitter. See my thread here with driver photos: https://budgetlightforum.com/t/-/1683?page=1#comment-99533 . Personally I don't trust it. I now really like my R5 at 1.4A!
-Garry