Well I had to buy the third party bat when the one came with my drone was DOA, the retailer send my another batter and it was DOA. I went to Best Buy got one, it worked then bought the cheaper one off Amazon for a backup, did some testing with it no problems so far but have not went on a good flight yet with it, Hell still learning to fly so have not wanted to yet. but as soon as get to more open space and can do so longevity testing short range will test with it post results later sometime but so far it works. Also on the failed batteries, opened a support case with DJI on both the DOA batteries, video me trying to get them to work, not charging good battery charging and working in AC, More documentation than the military, they replaced them! Yiipie! now have four batteries.