Assists the drivers of the iMiev, CZero, and iOn electric cars
About OBDZero
OBDZero is an auto & vehicles app developed by David Cecil.
Download Statistics
OBDZero has been downloaded 13 thousand times. In the last 30 days, the app was downloaded 280 times.
User Ratings
The app has no ratings yet.
App Information
OBDZero is FREE to download. The APK download size is 4.22 MB. The latest version available is 4.2. The last update was on December 3, 2025.
Technical Requirements
OBDZero requires Android 4.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play September 2017.
Description
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 14 different screens. A 15th 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 battery capacity in Ah and the remaining Ah • Volts shows the battery volts and the voltages of the highest and lowest cells • oC shows the average cell temperature and the temperatures of the warmest and coldest cells • WATTS shows the car’s average watts, speed and watt-hours per km. • DRIVE updates the distance to the next charging station, the difference between the remaining (aka rest) range and the distance to the station, and suggests a speed to the station.
OBDZero can also measure the 100% capacity of the cars battery. But it cannot reset the capacity.
The app saves data in semicolon separated text files, either in the phone’s internal RAM or on an SD Card depending on how the phone is set up.
OBDZero runs on older phones starting with Android 5.0. It works with some but not all inexpensive OBDII Bluetooth dongles.
The Vgate Company sent a number of their OBD dongles for testing and the results are positive. The Vgate FD linker is a good choice. Pirate copies of Vgate dongles are sold on the Internet. Tests of a copy and a true Vgate Scan showed that the true Scan is more stable and faster than the copy. When buying a dongle that purports to be manufactured by Vgate, check that the Vgate is the supplier.
The app does not exchange data with the Internet and it does not use GPS.
There is a user manual available for download at OBDzero.dk or by writing to ORPEnvironment@gmail.com
I take no responsibility for any consequences of OBDZero's use.
Acknowledgements and references: Much of the code for OBDZero comes from Blueterm by pymasde.es. The commands to the Bluetooth dongle were found in ELM327DSH.pdf from www.elmelectronics.com The interpretations of the CAN PIDs for speed, voltage and current etc. were found on http://myimiev.com/forum/ posted by jjlink, garygid, priusfan, plaes, dax, cristi, silasat and kiev and on https://www.myoutlanderphev.com/forum posted by anko.
Special thanks to Anders Fanøe and Allan Korup for their advice on electric car and CAN technology.
Recent changes: This release contains only a few small improvements
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Amazingly simple to use! I was getting data 2 mins after plugging in my dongle. The screens are well-thought-out with loads of information. Excellent support as well!
★★★★★Laszlo Gugi· Jan 7, 2025
If you own or drive one of the supported cars (iMiev, Zero or iOn) this app is the only of many alternative apps which does not need a special OBD adapter to go. It runs reliably with a simple OBD2 adapter. You can monitor the condition of each battery cell and forecast the necessary change of the weakest cells.
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Technologies used by OBDZero
OBDZero is requesting 6 permissions and is using 19 libraries.
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