IN English :
My battery must be defective because it only charges once every two times. When I put this battery in my DJI Spark, my drone does not want to take off and indicates a "No Fly Zone" (even in authorized areas). I put my other batteries I do not have this problem (this battery was the one that came with the drone)
EN FRANCAIS : Ma batterie doit être défectueuse car elle ne charge qu'une fois sur deux.Quand je mets cette batterie dans mon DJI Spark , mon drone ne veut pas décoller et indique une "No Fly Zone"(même dans des zone autorisées) .Et quand je mets mets mes autres batteries je n'ai pas ce problème (cette batterie était celle qui été fourni avec le drone)

So get it back to the dealer or open a case with DJI
There are 'rumors', my dealer told me that in some of the spark Combos he sold, one of the 2 batteries, that one that came extra, mostly, was defective!
And if I remember that right, the mavic had something like that, too, end of last/beginning of this year

S-e-ven Posted at 2017-12-30 01:06
So get it back to the dealer or open a case with DJI
There are 'rumors', my dealer told me that in a some of the spark Combos he sold, one of the 2 batteries, that one that came extra, mostly, was defective!
And if I remember that right, the mavic had something like that, too, end of last/beginning of this year

I already tried to get in touch with eu but it did not work

Open a help ticket with DJI direct.