Got up, sun's shining, wife's pushing the bikes out of the garage so gear on and!!!!!!!!!
Flat battery on her CBF.
Quick boost and away it went. Left it running for 20 mins, checked charge, all seems ok. She stopped it to go lock the house (don't ask why), and it was flat again. Restart and off we go. After 50 mile run around it seems to be ok but i'll check it again later.