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. 4By turning the real-time voltage value can accurately determine the amount of remaining power, convenient for customers to drive. 5The real-time voltage value can accurately judge whether the lithium battery is damaged.SpecificationItem Type: E-BikeTwistThrottleMaterial: plasticColor: as picture shownEfficiency: 98% or higherHall grade: linear hall high quality rubber imported LED digital display lampQuantity: 1 PairSpecification: electric vehicle general accessoriesTerminal length: 2m 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.Battery common sense:Operation Instruction:2, by turning the real-time voltage value can accurately determine whether the lithium battery damage, convenient after sale!3, by turning the voltage value can judge the quality of lithium battery, convenient for the factory to purchase qualified lithium battery!4, automatic identification voltage under 100V electric vehicles, can be general, convenient for factory procurement, save the cost of capital and management costs!5. There are only 4 wires for ordinary electric display, which is convenient for workers to install and save time.Note:Non-professional installation please pay attention to the line sequence, do not connect the wrong line, otherwise it is easy to cause hall and LED tube burn.Basic parameters: according to different battery materials, old and new, different batch, the number of voltage v will be different, please test a few times, you can get your electric vehicle battery parameters.For 48v electric bike, maximum voltage is about 54.6v, /58.8v, mini is about 40v or higher,For other electric bike with higher voltage there should be a voltmeter installed.Installation method: 3 wires, red for positive, black for negative, green for signal, and yellow for positive.How to maintain the lithium battery:Package List1 Pair xTwistThrottle1 x Manual2 x Keys