Just wanted to share an easy way to modify your battery tray, designed for a Yuasa YB16AL-A2, to fit the smaller and lighter BT12B-BS. Maybe this can help. Materials : Velcro loops on textile belt Velcro hooks on tape Cheers
Sam did you now there is a different battery box base tray available which makes it suitable for the later YT12B-BS (smaller) agm battery? Part number is 829.1.270.1A and they cost around a tenner. It just clips in and replaces the support tray of the battery box but uses a different battery retaining clip part number 827.1.195.1A (also less than a tenner) Can be removed should you want to revert to the bigger battery for any reason