MyVoltControl

September 19, 2024

In version 2.8.0: - For the Cell Balance test in the Volt Diag section, you can now plot the voltages for all of the cells directly in MyVoltControl. - We added a new "Weak Cells" test in the Volt Diag section to look for weak battery cells in 2016 and later cars. - The European builds of the Opel Ampera-e cars are now supported. - We fixed an error in the handling of battery information for the 2016 Cadillac ELR. - The heading title on each of the sub-pages in the app were changed to try to avoid confusion with other apps. - We fixed some bugs and made other minor improvements in many places.

March 17, 2024

In version 2.7.0: - We added support for the Cadillac CT6 Plug-In Hybrid vehicle. - In the Volt Diag function, we now display the battery state-of-charge (SOC) for the Internal Resistance test. - In the Volt Diag function, we now display the power draw from the battery which occurred when the Cell Balance test was running. If the test is being run at a low-SOC state, we issue instructions if the power is too low for that test to be valid. If the power draw was not consistent during any Cell Balance test, we issue instructions for that as well. - In the Connection Help document, we added some information at the end of the MX+ section about making re-connections reliable. - In the App Functions document, we added a graph at the end of the Volt Diag section showing how internal resistance varies with temperature and state-of-charge. - We fixed some bugs and made other minor improvements in many places.

October 23, 2023

This version (2.6.1) fixes the cause of a crash that could occur in limited circumstances. In version 2.6.0: - We added the ability to select which parameters are shown at the top of the first Volt Hold function page. You can also change the order in which they are shown. This is accessed thru the new "Edit" button at the top-right of the screen. - In addition, you can add up to two additional copies of that first top-of-the-page, with each showing the parameters you customize it to show. - In the Volt Diag function, we now allow you to override the year of the battery that is installed in your car for the Battery Capacity calculation. This will be useful if your battery has been replaced with one from a car of a different model year. It is almost required if you have a 2012 car because only you can determine if your car has the YK8 RPO which indicates that it has a 2013 battery. - We made further corrections to the calculation of the Battery Capacity "kWh" value for 2013-2015 model years. - We now issue an error message if you try to Connect to the OBD adapter before you have selected the connection method. - We completed other minor fixes and improvements.

October 17, 2023

In this version: - We added the ability to select which parameters are shown at the top of the first Volt Hold function page. You can also change the order in which they are shown. This is accessed thru the new "Edit" button at the top-right of the screen. - In addition, you can add up to two additional copies of that first top-of-the-page, with each showing the parameters you customize it to show. - In the Volt Diag function, we now allow you to override the year of the battery that is installed in your car for the Battery Capacity calculation. This will be useful if your battery has been replaced with one from a car of a different model year. It is almost required if you have a 2012 car because only you can determine if your car has the YK8 RPO which indicates that it has a 2013 battery. - We made further corrections to the calculation of the Battery Capacity "kWh" value for 2013-2015 model years. - We now issue an error message if you try to Connect to the OBD adapter before you have selected the connection method. - We completed other minor fixes and improvements.

August 8, 2023

In this version: - we added a new Diag Information screen to help you understand what results are "good" or "bad" when you run the tests on the Volt Diag screen. This is accessed by pressing the "Info" icon at the top-right of the screen. - we revised what is shown for the Cell Balance test (part of Volt Diag) in some cases to show more meaningful information about the number of cells that are exceeding a range. - we made changes to the App Functions documentation to give more information on the proper ways to use the Cell Balance test and to discuss how you might restore some of your lost battery capacity. - we corrected the calculation of the Battery Capacity "kWh" value. - we completed other minor fixes and improvements. We also now require iOS 15 (was 13 previously) but this should have no effect on anyone since any device that can run iOS 13 can also run iOS 15.

May 16, 2023

Version 2.4.0 is the first to require iOS 13 or later. Those of you running iOS 12 will still be able to run the version of MyVoltControl that you are currently using, and even install that version on "new to you" phones which are on iOS12. For the rest of us ... on with the show. This version adds a new feature to the My Volt Diag function. You can now determine the internal resistance of the high-voltage battery in your car. This new feature completes the set of information needed to gauge the health of your traction battery. Also in version 2.4.0, there is a new feature for the My Volt Lifetime function. It will now calculate the distance your car has driven in both ICE and EV modes. This information is formatted so that you can make a screenshot of the information to pass on to the next owner of your car after you reset the current Lifetime Fuel Economy value. Passing it on will prevent the loss of this information that otherwise occurs when you reset this value. (You can use this feature even if you are not resetting the Lifetime Fuel Economy value.) We've also added what are known as "App Intents" to this version. What this means is that when you are using the Apple Shortcuts app to create shortcuts, you will now find MyVoltControl among the list of apps that provide support for Shortcuts. You can include MyVoltControl as part of other automations you are creating, or you can create a shortcut just to call MyVoltControl (such as starting it in the Volt Hold function). When you create such a shortcut, you can add a link to it as a bookmark on your home screen. You can give a shortcut any name you like, and simply speaking that name to Siri will run the shortcut immediately. And of course ... other small improvements and bug fixes.

May 9, 2023

With our apologies, version 2.3.3 fixes a problem with the formatting of the HV Isolation Test portion of the Volt Diag function on small screens.

March 30, 2023

This version fixes a formatting problem for the Auto-Hold threshold settings page that occurred with smaller screen phones. It also eliminates bright areas for iOS 12 users of the App on both the Volt Hold screen and the Volt 12v screen, which were always supposed to appear Dark.

March 24, 2023

NOTE: This will be the last release which supports iOS 12. You will still be able to use MyVoltControl with your iOS 12 phone, and even download it if you get a "new" (to you) iOS 12 phone. What this really means is that future enhancements will not make it to your iOS 12 phone. Only those running iOS 13 or later will get future enhancements. In this release we added another parameter that you can set to trigger "Auto-Hold", that being the temperature of the engine coolant. If you're going to have to burn fuel to get to your destination anyway, you may as well burn some of that early in your trip to warm the cabin. We also fixed a few bugs.

March 11, 2023

Version 2.3.0 delivers several major enhancements to MyVoltControl. We hope you like it! 1) The Auto-Hold function has undergone a major revision to allow you to automatically turn on Hold Mode based on 3 additional parameters. Using SOC as the trigger to protect a weak battery required advanced work to define that SOC, and then the SOC wasn't sensitive enough to really do the job. You can now trigger auto-hold based on average battery cell voltage, minimum cell voltage, or the difference between highest and lowest cell voltage (in addition to SOC and Speed). This is all done on a new Volt Hold "Data page". Refer to the App Functions document for more details. 2) For those trying to troubleshoot traction battery isolation problems, we've added the ability to rerun the isolation test at your command, easily, using only MyVoltControl. 3) We've added "Quick Actions" to the MyVoltControl App Icon on your home screen. Just long-press the icon to bring up a menu that allows you to immediately start the app in either the Volt Hold function, or the Volt 12v function. 4) This version will provide a very large improvement in the reliability of keeping your engine on, or off, as commanded. A large part of the Volt Hold command dispatching process was re-written. 5) Of course we fixed a few bugs. Most significantly, no-longer-used BLE OBD adapters will stop showing up as an option (after a brief time), and the Isolation test status will now show "Running" instead of "Unknown". One more piece of news: This will be the last release which supports iOS 12. Note that you will still be able to use MyVoltControl with your iOS 12 phone, and even download it if you get a "new" (to you) iOS 12 phone. What this really means is that future enhancements will not make it to your iOS 12 phone. Only those running iOS 13 or later will get future enhancements.

My Volt Hold Function

Ability to use the My Volt Hold function.

My Volt Lifetime Function

Ability to use the My Volt Lifetime function.

My Volt 12v Function.

Ability to use the My Volt 12v function.

My Volt Diag Function

Ability to use the My Volt Diag function.

My Volt Afterblow Function

Ability to use the My Volt Afterblow function