SG reading 59% in the morning. Ran the engine for 2 hours, which SH calculated as up to 80%.
Went to Hebden Bridge on buses 66 / 500. Sun came out during the day, and when we got back around 5.50, SG was reading 100. So did not bother with the engine. After folk club it has come down to 99, but voltage was still 12.8. Will have to see what it is like after a night.
0 miles, 2 engine hours.