If you’re one of the people with an older Volt battery who is trying to keep your love alive, you might be interested in the enhanced Auto-Hold function just released in version 2.3 of the MyVoltControl app (iOS only!). As shown in the picture below, you can now set thresholds for a number of parameters and when these thresholds are crossed, your car will automatically enter Hold mode. (Works on 2011/2012 too.) You do need an OBD adapter for this. Give it a try!