On Sun, 25 Feb 2018, Greg D. wrote:
Perhaps yes, but why?
If the objective is to eliminate having multiple SIMs and associated payment (a worthy objective!), I think it would be better / safer to put the one SIM in a mobile hotspot, and let everyone (OVMS and other clients) connect to that. That's what I am testing with the SyncUp OBDII Dongle and the OBD2ECU task, and it seems to work.
If OVMS can be the hotspot, then you don't have to buy and install a hotspot. You would need to choose an appropriate SIM card and plan.
The only issue I have is knowing when it is safe to turn off the Dongle's power, and then how to turn it back on again. I'm not sure it's low enough power to just be on all the time, even given that all / most / some EVs (yes?) have 12v systems that are refreshed automatically from the main (BIG) battery pack. The ovms module seems to run about 60ma; the SyncUp dongle adds another 150ma on top of that. How much drain is too much?
The problem is that many EV's don't recharge the 12V battery unless the car is turned on. This dates back at least to the 2002/3 RAV4-EV (of which we have one) for which "dead 12V battery" was the most common cause of failure to run. -- Steve