The PDF Manual says

Battery Type:   LiPo 3S

But on the battery itself it says

Lithium Ion Rechargeable Battery


I know the difference - question is why?  


My guess is that DJI could not get US import approvals with LiPo batteries, what with all the hoverboards exploding...

In any case, the Manual should be updated, eh?

Typo:  Lithion should be Lithium

Edit:  doh, just learned how to edit posts


Edit:  I'll bet this issue is related to why we don't see spare / extra batteries for S1 available...