EVOBD2 is a Mini Bluetooth OBDII Display

For these electric cars


KIA: Niro EV – Soul EV(2020+) – EV6

EVOBD2 is a tiny smart display Plug & Play, simple to use and always available to show hidden information from your main car displays. Mount it on the dash, leave it there if you want and use it automatically! Your smart phone has other tasks to do.

Imperial units support (miles, Fahrenheit). Smart features like RECENT-BASED GOM calculated from the last 50 km / half hour driving for REMAINING RANGE, ACTUAL BATTERY CAPACITY TEST and SINGLE TRIP METER. Battery State-of-Health SOH, TEMPERATURE & more.

EVOBD2 gets data from the car’s computer and displays it on 9 different available screens.

You can monitor battery state of charge, temperature, state-of-health (SOH), indoor temperature, auxiliary battery state, cumulative charged and discharged energy usage and more effortlessly at the press of a button. See all it can do and details down this page. We like simplicity, everything you need is on this page.

There is also an innovative energy counter that you can use during a short drive, a multiple day road-trip or at the fast charger to monitor what your battery actually uses or gains. Make more conscious decisions about when to charge at a fast charger depending of battery temperature and get more for your money. Plus, turn off your car and your prefered display screen and energy counter data are saved so the display is ready for your next drive.

Access Easily Hidden Informations of your EV!

  • No need to constantly mount / unmount / leave an expensive iOs / Android mobile phone / tablet on your car dash. Our system is fully automatic, you don’t need to think about it.
  • No need to waiste time and start an app like Torque Pro every time you want to access all this information. We know that in real life you don’t do it. But your missing useful data.
  • Avoid transferring files from devices to devices, searching the Internet, messing with PIDs / technical formulas, choosing what data you think is important or configuring application displays. We did the painful work for you and you will save time! (We know geeks do all of this anyway and will use multiple systems, but it’s fine!)
  • Above all: the data will easily be right in front of you all the time. You drive one of the most advanced electric vehicule and you deserve to know what going on.

Get a compatible Bluetooth OBDII Adapter & Get Going!

EVOBD2 requires a Bluetooth OBDII compatible adapter dongle to get information from your car. See the full list of compatible Bluetooth OBDII adapters below. Purchase EVOBD2 alone if you want to get your compatible Bluetooth OBDII adapter dongle from sources like Amazon yourself or get the EVOBD2 Kit that includes an adapter with the EVOBD2 display. We recommend highly to choose a small adapter because you could damage the car OBDII port with your legs if you get a larger adapter. Also avoid adapters with a wake-up button or connect button on the face plate. You will want to avoid pressing this button to wake it up and use the EVOBD2 display everytime. The goal is that you should do the least operations at all to use the system! Also note that these adapters consume very little power and can be left plugged in your car without any worry. All the following compatible adapters are a good partner for EVOBD2 for a fully automatic operation.

Compatible Adapters:

Recommended adapters will give best performance and reliable communication being less susceptible to radio interferences

Attention – The following adapters are NOT compatible:

OBDLink 428101 MX+, Stanz Blue Mini ELM327 Supper Mini OBD2, Motopower MP69034 OBD2, Aermotor Bluetooth OBD2, Vgate OBD2 iCar2 ELM327, Golvery Car OBD ii for Android

Automatic Adapter Pairing

EVOBD2 pairs easily using a one button setup with the compatible Bluetooth OBDII adapter. It automatically searches, finds, deals with necessary PINs to learn and pair with your adapter and once connected, unless you change the adapter, never do the pairing process again. Just remember to disconnect other apps you were using with the Bluetooth adapter because the adapter talks to only one device at a time.

EVOBD2 is Safe & Secure

EVOBD2 only looks at the data in your car and does absolutely not interfere with the vehicle operation. It is not designed to check or clear error codes. Use it as a very convenient tool to monitor and learn what your electric car is up to.

Now the Good Stuff – Meet the EVOBD2 Data Screens!

Heater ON

1: General Information

  • Battery state of charge (SOC) in %
  • Average Battery Module Temperature in C
  • Battery Power in kW
  • Indoor Temperature in C
Fast charging

Screen 1 is the main default information center useful to monitor the battery state of charge and temperature. If it is warm enough over around 16 Celsius the charging power will be better and higher than 26 Celsius the charging power will be very efficient. Power positive values discharging the battery are in red and power negative values while charging or regenerative breaking are in green.

Recent-based GOM


  • Battery state of charge (SOC) in %
  • A mix of average battery consumption for the last 30 minutes of travel and past learned data in kWh/100km for initial GOM calculation. Unit is shipped in “summer” mode at 15.4 kWh/100km and will adapt to seasons and driving styles after 5 drives longer than 30 minutes.
  • Remaining vehicle range (GOM) in km

Screen 2 presents a Recent-Based GOM or remaining range. Unlike the vehicle’s GOM which indicates the remaining range according to a calculation based on the last few hundreds km traveled, the recent-based GOM on the display bases its calculations on the last 50 km or 30 minutes traveled. The recent-based GOM prediction can thus give a better idea of the remaining range if the vehicle’s consumption and driving conditions differ from what has been driven in the long term past.

If consumption is greater than usual, the recent-based GOM will adapt faster than the vehicle’s GOM and the remaining range will decrease more quickly. Conversely, if the fuel consumption is lower, the recent-based GOM will decrease more slowly and the remaining range could even increase, which the vehicle’s GOM does not do. Here are 2 examples of real situations to understand the usefulness of the recent-based GOM:

CASE OF INCREASED CONSUMPTION: you install skis and/or a luggage rack on the roof of your vehicle. As you start to drive, the vehicle obviously cannot account for the headwind and the added friction on the skis. This leads to a significant increase in consumption compared to the long term history of the GOM of your vehicle. At the start, the vehicle’s GOM indicates 320 km and 290 km after 25 km traveled. On the other hand, the recent-based GOM detects the increase in consumption and after the 25 km traveled, it indicates a range of 230 km, which is closer to reality. You can then change your plans and decide to do an early charging stop if necessary before arriving at your destination.

CASE OF REDUCED CONSUMPTION: after a drive on the highway with high consumption of 16 kWh/100km you arrive in town, the speed decreases and there is a fair amount of traffic. The vehicle’s consumption then drops to 12 kWh/100km in the last minutes. The vehicle’s GOM indicates that there are 45 km remaining while the recent-based GOM indicates that you have 85 km remaining at the same pace, which can reassure you. In certain urban driving situations with very low consumption, the range can exceed 500 or 600 km (the record being more than 700 km with the Hyundai Kona). The recent-based GOM may reflect this increase in range unlike the vehicle’s GOM.

The vehicle’s GOM is of course always useful and essential, but the recent-based GOM is complementary since it is based on recent consumption.

3: Single Trip info

  • Travel time in hours and minutes
  • Distance traveled in km
  • Average consumption of the trip in kWh/100km
  • Average speed in km/h

Screen 3 shows information for a single trip. Average speed is calculated using real time and counts stops, a prolonged stop reducing the average speed. This screen fills the shortcoming of the vehicle which only offers cumulative trip information (no “Trip B” for a single trip). The trip information on the EVOBD2 display can then be viewed as a single trip and that of the vehicle relates to the cumulative trips.

4: High Voltage Battery

  • Battery DC Voltage in V
  • Battery minimum temperature module Tmin in C
  • Battery Power in kW
  • Battery Heater 1 Temperature in C

Screen 4 let’s you dive a little more into the battery showing the battery DC voltage and also the battery heater temperature at the bottom. The higher the voltage, the stronger the battery is after a charge. The voltage then decreases as you use the car and the state of charge drops. The heater usually kicks in to improve charging performance at the fast charger and helps maintain the battery in cold weather specially if winter mode is enabled.

Aux bat discharging

5: 12 V Auxiliary Battery

  • Auxiliary Battery State of Charge in %
  • Auxiliary Battery Voltage in V
  • Auxiliary Battery Currrent in A
Aux bat charging

Screen 5 displays the state of the other smaller but important auxiliary battery of your vehicle. Without this useful battery, you won’t be able to drive. Normally auxiliary battery voltage should be over 13 V and it’s state of charge should vary between 60 % and 100 %. The main battery takes care of charging the auxiliary battery when needed. The display shows a positive current value in red while the auxiliary battery is discharging and a negative green value while it is being charged by the main high voltage battery.

6: Battery cells voltages

  • Maximum voltage of highest cell in V
  • Difference between maximum and minimum cell voltage in V
  • Minimum voltage of lowest cell in V

Screen 6 shows extreme values for the high voltage battery cells. The voltage difference should be as small as possible if the cells of the high voltage battery are well balanced and managed by the vehicle’s BMS.

7: Actual battery capacity tests

  • State of charge SOC in %
  • Last battery capacity test in kWh
  • Access to the last 5 battery capacity tests at specific odometer

Screen 7 shows the actual battery capacity in kWh tested at odometer value when fully charged to 100% overnight. This method is more practical than a discharge test obliging the user to drive hundreds of km in one go and with complex regeneration energies to deal with. Carried out several months apart, this test indicates the usable energy of the battery at a specific odometer value with a history of the last 5 tests. After a few tests months or years apart you will see if your main car battery is still in good shape or how is there is a noticeable battery degradation trend over time. This is useful information along with battery State of Health (SOH) in screen 10.

Lower the % State of charge (SOC) below 15%. Drive close to your charging station before charging for the night. IMPORTANT: recommendation not to drop SOC below 8% to avoid running out of energy far from the charging station! The display will then show messages to indicate the steps to start the test, when to plug in the charger and when the test is actually started overnight for the complete charge (more info on the procedure in the manual). The average battery temperature (screen 1) should be above 16C. The display does not allow the test to be carried out in winter if the battery is cold because too much energy may be lost in heat and falsify the results.

The test takes into account that not all the energy charged is completely usable. The Amp hour battery capacity is constant over the full 0-100% SOC range, but not the energy in kWh because the battery voltage drops, thus the distribution of energy is not linear over the whole range. For instance on a 64 kWh Kona of 180 Ah capacity, 1% SOC represents 1.8Ah. At 100% SOC, the battery voltage is high at 408V and 1% SOC contains 1.8Ah x 408V = 0.73 kWh. The same 1% SOC near 0% at lower voltage has less energy typically (1.8Ah x 310V = 0.55 kWh.)

Video explaining the actual battery capacity test

8: Cumulative Energy

  • Cumulative Energy Charged in kWh
  • Cumulative Energy Discharged in kWh

Screen 8 let’s you monitor the total energy or cumulative energy charged (CEC) that was put into the battery either by charging or regenerative braking since day one. You also get the cumulative energy discharged while driving and using HVAC ventilation / heating. Again, if the battery gains energy the value is green and if the battery uses energy the discharged value is red. Note that the charged energy is always higher than the discharged energy because of the battery heat and other losses and also because your battery is not empty for you to drive!

Short drive

9: Energy Counter

  • Energy Charged Counter in kWh
  • Energy Discharged in kWh

Screen 9 is an energy counter that shows you the energy the battery used and/or gained for a specific event. This can be very useful for instance to see what energy you actually got at the fast charger or at your home charger. All you need to do is press the right button on this screen to reset the counter before the charge. Same idea before a short drive or a multiple days roadtrip, you reset the counter and you can monitor how much your battery worked for you. Note that on a regular drive, you will see that you gain a bit of energy due to regenerative braking. You can turn on and off the car, the counter information remains in memory. Also you can still change screens if you want to see something else, the counter still runs in the background.

10: SOH & Operating Time

  • Battery State of Health in %
  • Car Operating Time in hours & minutes

Screen 10 is not the one you most likely will spend a lot of time on, but nevertheless you will be interested to check it on a regular basis to know this important information about car, the state of health of your battery. A newer vehicle has an expected 100% state of health. This value may decrease with vehicule usage to represent the battery degradation over time. We added the operating time of the vehicule since day one so that you could make a note at what time (and at wich amount of km or miles driven) the battery starts to show signs of degradation.

Meet EVOBD2 in this video

Buy EVOBD2 with or without Bluetooth OBDII Adapter

Get your own adapter refering to the above compatibility list. Beware if your adapter is not on the list it may not work!

Select English or French EVOBD2 Display Interface at checkout

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