This BetaFPV BT2.0 Aquila 16 Female to Male Cable (5 Pack) is perfect for Aquila16 FPV kit users. Whether you're a beginner or an experienced flyer, it helps you charge your Aquila16 Exclusive Battery easily. Use it with a 6 Ports 1S Battery Charger & Adapter or 2S Battery Charger and Voltage Tester. The cable is 55mm long (not including the plug) and weighs 1.23g/set. It has a BT2.0 male connector for the input (to connect to a BT2.0 charger) and a BT2.0 female connector for the output (to connect to a BT2.0 battery). Blue represents the positive pole (+), and White represents the negative pole(-). Comes in a 5 pack, so you'll have enough cables on hand for all your charging needs.