【Application】LED voltage display is suitable for motorcycles from 5V to 99V, which can automatically identify and display voltage in real time, with stable performance, safety and reliability 【Automatic Recognition】Real-time digital LED voltage display, intuitive and convenient, can help you accurately assess the remaining power and driving distance, you can drive better 【Check the Battery】By checking the voltage, you can accurately judge whether the lithium battery is damaged, which is economical and practical. Easy-to-install design saves you time 【No Battery Limit】This product is a power key with the function of turning on and off the power，no battery limit, lead-acid battery, lithium battery, water battery, dry battery are applicable 【Common wiring methods 1】4-wire: yellow is the voltage display wire, connected to the positive pole of the electric bicycle power supply; 5-wire: The blue wire is connected to the output wire of the controller power lock, and the yellow wire is connected to the positive pole of the power supply of the controller electrical switch input wire 【Common wiring methods 2】6-wires: yellow wire connected to the positive pole of the power supply, blue wire, white wire as the functional wire (can be used as a reverse switch, horn switch, cruise switch, power lock); 7 wires: yellow connected to the positive pole of the power supply, blue for shared wires, middle gear for 3rd gear, white for high gear, brown for low gear Specification:Condition: Brand New
Item Type: E-Bike Voltage Display
Material: plastic
Color: as picture shown
Model: S series (5V-99V automatic identification of electric vehicle voltage)
Efficiency: 98% or higher
Hall grade: linear hall high quality rubber imported LED digital display lamp
Working voltage: turn DC0.8V-4.2V
Power display: regardless of lead-acid battery, lithium battery, regardless of voltage, can be automatically identified (12V, 24V, 36V, 48V, 60V, 72V electric vehicles can be directly used, some 84V electric vehicles can be used)
Quantity: 1 pcs
Specification: electric vehicle general accessories
Terminal length: 1.8m by defaultNote:
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 12v electric bike, maximum voltage is about 12.6v, mini is about 9v or higher,
For 24 electric bike, maximum voltage is about 29.4v, mini is about 21v or higher,
For 36v electric bike, maximum voltage is about 42v, mini is about 29v or higher,
For 48v electric bike, maximum voltage is about 54.6v, /58.8v, mini is about 40v or higher,
For 60v electric bike, maximum voltage is about 72v, mini is about 49v or higher,
For 72v electric bike, maximum voltage is about 84v, mini is about 60v 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. 
Package List:1 x E-Bike Voltage Display2 x Keys