I now have about 200 flights on 1 of 3 of my batteries and not one issue. But.... after 200 flights the battery only lasts about 20 mins with about 20% left. In the beginning when batteries were new I was getting 20 mins with 40% left. So I'm going to assume I should be able to get about 50 to 100 flights more before I need to replace them. 15 mins with About 15% left is probably going to be time for replacement batteries. 656 flights on 3 batteries so far and I just changed my blades and put new ones on.
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