Is the battery charging hub+ 2 batteries worth it?
Worth how much?... very vague question.
$20 = yep!
$60 = nope!
Personally, I wouldn't have less than three batteries.
I have the OEM 3-battery hub, but will add THIS ONE soon. Of all Tello chargers I've seen, I like that one best because of the digital display and charges all batts at the same time.