Features1No matter Lead-acid batteries, lithium batteries, water batteries, dry batteries. 2All kinds of electric vehicle (12V to 99V) can be automatically identified and displayed in real time. 3Through the voltage number to determine the fault of electric vehicle, twice the result with half the effort. 4Real-time digital voltage display, intuitive, convenient, can accurately judge the remaining electricity, driving distance. 5By the real-time voltage value can accurately determine the amount of remaining power, convenient for you to drive. 6The real-time voltage value can accurately judge whether the lithium battery is damaged. 7The quality of lithium battery can be judged by the value of turning voltage to facilitate the factory to purchase qualified lithium battery.SpecificationItem Type: E-Bike Thumb ThrottleMaterial: plasticColor: as picture shownEfficiency: 98%Hall grade: linear hall, high quality rubber, imported LED digital display lampQuantity: 1 Pair Specification: electric vehicle universal accessoriesTerminal length: 1.8 m by defaultGreen is for throttle hall signal, red wire is for throttle +5v, black is negative wire; please connect according to controller function wire, U can not just match same color wire, if wrong connected that will damage your controller and throttle.5 Core Wire: the green wire is the handle hall signal wire, the red wire is the handle positive 5v, the black wire is the negative pole, the blue wire is connected to the controller switch lock outlet wire, and the yellow wire is connected to the controller switch inlet power supply positive pole, (power switch, control vehicle power supply)The above is common wiring way, if need made to order please connect with salesperson.Battery common sense:Installation method: 3 wires, red wire for positive, black wire for negative, green wire for signal, and yellow wire for power supply positive.How to maintain the lithium battery:Package List1 Pair x E-Bike Thumb Throttle1 x Manual2 x Keys