User blog comment:Luxionmk2/Counting BCs.../@comment-75.219.114.240-20140707045429

Thank you for your insight and research. I suspected that the rate of bb filling was influenced by the level of the unit's BBC.

Can I just ask everyone is there any recommended way to level bb to max reliably? I have a five star zeln and six star lance that I want to max but I don't want to skyrocket their levels or it will become very expensive. I already know about burst frogs but I don't know if they're available in normal quests.