I bought this kit from Amazon (not faulting Amazon) https://www.amazon.com/QWinOut-Dron...=1499199539&sr=1-10&keywords=drone+kit+flysky The battery in this kit is an FMT 3s LiPO. The + (red ) and - (black) wires were reversed INSIDE the battery! The connector was right because the Red wire went to the + terminal and the Black went to the - terminal. This is dangerous. The 4-pin balance connector was wired correctly and that was used to do the initial charge. When I first plugged it into the bottom plate of the drone via the Power Module, it smoked the module instantly. It also burned open the + connections between the plate input and the 4 ESC's. I reversed the wiring on the battery as you can see in the picture. I soldered an external jumper wire over the burned (internal) plate etch and ordered a new ordered a new power module. I do not know yet if the ESC's were damaged. Moral of the story, when you buy a battery, it would be wise to check the polarity of the battery.