Recently there have been a few threads about battery coding with OBDEleven. I've stated numerous times that you don't need Pro to code a battery...
I checked the other day and it appears you do!
However, if you get very lucky, like I obviously did, the app may glitch and let you go through with the coding. I do
not have Pro, but have successfully coded the battery, somehow. That's why I thought you didn't need it.
So, sorry to anyone who had to shell out another 20 quid that they weren't expecting!