World first Yuneec Q500 10,000mah battery mounted externally and dual battery system

I made this video to demonstrate my own design for as external battery carrier for the Yuneec Q500. Also in this video includes the "Madden Flight" with a 10,000mah battery. Making this the world's first flight of a Yuneec Q500 with a 10,000mah battery. Also I demonstrate how to use the battery carrier to run 2 batteries at the same time, and the use of an adapter to connect both batteries to the single connector. Finally, you will see the cartridge style connector I designed, which makes one easy step "plug and play" to be able to add a power supply cord that makes all this external battery mounting possible to begin with. All items available on eBay. Search Yuneec Q500 External Battery Mount on eBay. Once you find one of my items on eBay use the option to see all items from this seller. Add all that items you will want to your cart and go to checkout. Buying all at the same time using the eBay checkout cart, will combine the shipping cost to save you money on shipping. If you purchase individually, I will also need to ship them individually. Questions and answers.... 1: Why did your Q500 fall out of the sky Of course the reason I ask is I don't want to make the same mistake  2: Do you have any adapters for sale like a Deans plug to XT60 and The 2 XT60 plugs into 1 so 2 Batteries can be hooked up @ the same time for longer flights  3: What's the Minimum Battery C Rating recommended to be used  1. The one that fell out of the sky... Was only Q500 motor and motherboard. The rest off the drone was 3D printed. Explained in description the battery connector was worn and loose creating heat that melted the connector. 2. The adapter sellers on eBay will custom make any configuration you need. Just message them. Understand, I would need to purchase 10 to 20 at a time for each type of connector. 3. I wish there was a way to know the minimum c rating for sure. Since some batteries are under rated and others are over rated. Works good with some 25c batteries, one battery I found said 25c but would fly for a few minutes and remote would start warning of a low battery. This is why it would be hard to know for sure what 25c batteries will be enough.