https://alexnld.com/product/rjxhobby-dc-5-5-x-2-5mm-power-solder-plug-end-connection-adapter-for-rc-drone/?hilite="Coiled Spiral Power Adapter Cable DC 5.5×2.5mm to Weipu FS6 for BMPCC4K Blackmagic Pocket Cinema Camera 4K"