I've been looking around but haven't found this yet. My Daymak Rogue batteries drained over the winter. I forgot to charge them.

[Oderous]

I've been looking around but haven't found this yet. My Daymak Rogue batteries drained over the winter. I forgot to charge them.
The speedometer changed to mph. I want to change it back but the app won't let me. I did hear about a button push combination to reset it but cannot find this info anywhere.
If someone knows please help. Thanks.