This LCD speedometer unit is a modern all-in-one instrument panel for e-carts, e-bikes, and e-rickshaws. It consolidates several important pieces of information a driver needs: - Speed: Using either a direct wheel sensor (magnet and sensor on wheel) or by tapping into the motor’s hall sensor pulses, it computes and displays the current speed. The display might have a digital numeric speed readout and/or a bar/tachometer style. - Battery Status: It likely shows a battery icon or voltage reading that is auto-calibrated to 48V, 60V, or 72V nominal systems. Since the device is marketed for multiple voltages, it probably auto-detects or has a switch setting to accommodate the different full-scale voltages (e.g., 72V full ~84V actual). - Misc Info: Many such speedo displays also include odometer, trip distance, ride time, and sometimes error code display (if connected to a controller that communicates errors).
The fact that it covers 48/60/72V suggests it's meant for larger EVs (like electric scooters, motorbikes, carts) rather than 36V or below. It likely has an internal DC-DC or regulator to power the electronics from any of those pack voltages.
Physical design: - Typically a rectangular or round LCD screen, maybe around 3–4 inches diagonal, with a backlight (often blue or green). - It may have indicator icons (turn signals, high beam, etc.) if it's generic scooter style, but in an e-cart, maybe just basics. - Enclosure is usually plastic, somewhat weatherproof, often with a rubber seal and a plastic lens over the LCD. - Mounting might be via a bracket to the handlebar or flush into a dashboard panel.
Wiring: - There will be a multi-pin harness. Common wires include: battery positive, battery negative (to power it up), a speed sensor input (either from a wheel speed sensor or from controller's speed output), possibly a key switch input or ignition (so it turns on with the key), backlight control (like a headlight wire to dim or control backlight when lights on), and ground references. There might also be comm lines if it reads from a controller via digital protocol, but many are simple analog/digital signal based.
This device is great for giving an e-cart a more professional dashboard, letting the driver see how fast they're going and how much battery remains. For example, if installing on a DIY 48V go-kart, you mount the sensor on a wheel or use the motor’s hall count, input the wheel circumference to the meter (some units allow programming by a button or preset values), and then it will accurately display speed. At 60V or 72V, it still works because its internal electronics can handle up to maybe 80-90V and scale the battery gauge accordingly.
Because it’s universal, it may come with instructions to set it for 48, 60, or 72 so that the battery gauge calibrates. Speed calibration might involve entering a tire size code via a mode button on the unit.
Also, it's called “speedo Meter” implying it’s a speedometer (with maybe odometer). It might also show motor temperature or controller temperature if there's a feed, but not guaranteed.
This unit likely has a button (or two) to switch display modes (for trip/odo etc.) and maybe to change units (km/h to mph, etc.). In an e-cart context, km/h is typical.
