1Automatic Identification Function: Lithium battery, water battery and dry battery are not distinguished, which can automatically identify, and the diameter of handlebar is 2.3cm / 0.9in. 2Wide Compatibility: Does not distinguish all types of electric vehicles, universal 12V99V electric vehicles. 3Commonly Used Wiring Method: The green line is shifter hall signal line, the red line is shifter positive 5V, the black line is the negative pole, please be sure to compare the function wiring of the controller, not simply connect the controller wiring according to color, once the wrong connection will cause damage to the controller or handle. 45 Core Wire: The blue wire is connected to the output wire of the controller electric door lock, the yellow wire is connected to the input wire positive pole of the controller electric door lock, and the power switch controls the power supply of the vehicle. 5Manufacturing Material: Made of high quality plastic and rubber materials, it is strong and durable, which undoubtedly extends its service life. Item Type:ElectricBicycleThrottleGrip Weight: Approx.291g / 10.3oz Product Material: Plastic, Rubber Model: S Series (5V-99V Automatic Identification Of Electric Vehicle Voltage) Efficiency: 98% Hall Grade: Linear Hall Working Voltage: Shifter DC0.8V-4.2V Electric Quantity Display: Lithium Battery And Voltage Are Not Distinguished, And Can Automatically Identify (12V, 24V,36V,48V,60V,72V Electric Vehicles Can Be Directly Used, Part Of 84V Electric Vehicles Can Also Be Used) Handlebar Diameter:Approx.2.3cm/0.9in 1 x Handlebar Grips 1 x Shifters Please pay attention to the wiring sequence when non professional personnel install, do not connect the wrong line, otherwise it is easy to cause hall and LED tube burn. Basic Parameters:(according to different battery materials, new and old, different batches, voltage will be different, please test several times, you can get your own electric vehicle battery parameters)12V electric car, the highest voltage is about 12.6V or a little higher, the lowest about 9V or a little higher24V electric cars, the highest voltage is about 29.4V, the lowest is about 21V or a little higher36V electric cars, the highest voltage is about 42V, the lowest is about 29V or a little higher48V electric vehicles, the highest voltage is about 54.6V or 58.8V, the lowest is about 39V or a little higher60V electric cars, the highest voltage is about 72V, the lowest is about 49V or a little higher72V electric cars, the highest voltage is about 84V or a little higher, the lowest is about 60VElectric cars with higher voltages are already fitted with voltmeters.