Package Dimensions:15 x 6 x 3 cm 1. Regardless of the position of the throttle lever, the electric motor will not rotate when the battery is connected. 2. Electronic speed controller is compatible with 27s lithium battery and 420 NiMH battery. 3. Comprehensive protection, low pressure cutoff protection/overheat protection/throttle signal loss protection. 4. Compatible for RC drone/FPV racing drone, 70A continuous current and 5V/5A BEC output. 5. Carefully welding, precise hole position, complete functions, strong performance, very stable. Specification: Item Type: 70A ESC Material: Electronic Component Color: Red Weight: Approx. 80.0g/2.8oz Continuous Current: 70A Maximum Current: 75A BEC Output: 5V / 5A Applicable Battery: 2-7s lithium battery/4-20 Ni-MH battery Fitment: Fit for RC Drone Fit for FPV Racing Drone How to Use: Speed controller programming instructions:1. Enter prom, use simple option M to connect the throttle on the transmitter, and move the throttle lever to the full throttle position but don't move it2. Connect the battery. After the program is initialized for 3 seconds, the controller will start beeping. When finished, move the throttle stick to the lowest position. Package List: 1 x 70A ESC 1 x Manual Regardless of the position of the throttle lever, the electric motor will not rotate when the battery is connected. Comprehensive protection, low pressure cutoff protection/overheat protection/throttle signal loss protection. Compatible for RC drone/FPV racing drone, 70A continuous current and 5V/5A BEC output. Electronic speed controller is compatible with 27s lithium battery and 420 NiMH battery. Carefully welding, precise hole position, complete functions, strong performance, very stable. See more product details Regardless of the position of the throttle lever, the electric motor will not rotate when the battery is connected. Comprehensive protection, low pressure cutoff protection/overheat protection/throttle signal loss protection. Compatible for RC drone/FPV racing drone, 70A continuous current and 5V/5A BEC output. Electronic speed controller is compatible with 27s lithium battery and 420 NiMH battery. Carefully welding, precise hole position, complete functions, strong performance, very stable.