07-19-2020, 11:06 AM
The part numbers for compatible Samsung batteries are in the wiki. You should be able to get these locally. There are some reports that some plastic may need to be shaved from these to fit properly - it's not clear yet whether that's because they're 3rd party batteries that aren't quite to spec, or if there minor differences in things like the protrusions that stop the battery falling out when you take the back cover off.
https://wiki.pine64.org/index.php?title=...ne#Battery
https://wiki.pine64.org/index.php?title=...ne#Battery