An e-bike computer is used to measure performance such as speed, voltage, current and power consumption. Some e-bike computers also feature speed limiting, current limiting, low voltage cutout, hi/low power setting and logging of performance data (to download after the ride).
This standalone device uses an LCD screen, which is usually mounted to the handlebars.
This product uses an Android app as the user interface. The Speedict connects to the Android device using Bluetooth.