OBDZero reads, displays and stores data from the iMiev, CZero and iOn electric cars. The data such as speed and electricity use are available on the car’s CAN computer network via a Bluetooth dongle attached to the car’s OBD port. OBDZero presents this data in 12 different screens. A 13th screens logs messages between the app, the OBD dongle and the car. Six screens are intended for use while driving. These are: • Wh shows the battery capacity in kWh and the remaining kWh • Ah shows the batter