First off I wonder if mine's gone.
The optimate says it's ok, it appears to charge (14.1v whilst running) but after a 12 mile ride the other day didn't have enough in it to start, even the lo bat came up.
Just seen this on ebay
http://search.ebay.co.uk/search/sear...le=999+battery Which is the better/correct battery? one has BS at the end whilst the other has B4?
Cheers