Glider,
How many good batteries do you want or need? 20-50-100, all ready to ship on the next business day? Just make a power wire adapter and buy off the shelf lipo’s. The fastest, cheapest, easiest, laziest way to start using better batteries requires only 24” of 12awg silicone wire, the plug from a worn out battery, an XT-60 plug, and a piece of duct tape. Of course it can be done much better than that.
I cannot understand all the stress and anxiety people are placing on themselves in locating and obtaining low quality batteries housed in a hard plastic shell. To me the concept is just stupid. It has been since DJI first introduced the concept of “smart” batteries you could only buy from DJI. That people bought into the concept and allowed it to spread to other manufacturers is indicative of some seriously simple minds. To avoid eliminating “proprietary” batteries when one or more viable alternatives are present is incomprehensible.