All of the existing reviews detailing batteries unable to charge, completely dead batteries, are all true.

I originally purchased mine in July, and since then, they've sent me two replacement drones. Of all three drones I received, 10 of 11 batteries arrived completely DOA. One battery held charge for about 5 minutes of flight time.

EXO (or Open Store Drones) is selling these units without quality checking, knowing that this issue exists w/i their inventory. My customer service contact stated "I’ll personally make sure the order’s handled with extra care to give you the best chance at a fully functional system—especially the batteries." Since that statement I've received two replacement drones, w/ six batteries between the two, all of which were DOA.

EXO has processed a refund, however they kept the shipping charges.

I've ordered 2 Blackhawk 2 Pro drone kits with 2 batteries each, only one out of 4 actually worked. I got the first drone kit, neither battery would power on. I spent hours scouring the internet and working with their "support" team and nothing could be done. Since a warranty repair would've taken weeks or months, I ended up just returning the drone and got a new kit. I shouldn't have been surprised that only 1 worked. This time, Exo sent me a link to the amazon page of a third party battery that was supposedly compatible cause apparently they don't make batteries or drones, they just re-skin a cheap Chinese third party called Hubsan. They reimbursed me for the battery but I had to wait 3 weeks for it to arrive and while it was compatible with the drone, it wasn't compatible with the charger I got from Exo. It worked exactly once and could never charge again. NEVER buy from Exo. They have an F rating with the BBB for a reason...