User blog comment:Soulreaper1234/What's up with Ichigo and his BANKAI, is it in constant release?/@comment-1405841-20100915052358/@comment-1248963-20100915063200

It's not a long time in Bleach-time. It has barely been a day since Ichigo fought Grimmjow, so he hasn't been in Bankai for such a long time. Yes, Ichigo can keep his Bankai activated for longer periods of time than most Bankai-users since his Bankai is compressed and it doesn't eat up energy the way other, bigger Bankais do