Talk:Noelle (Original)/@comment-108.15.7.3-20150514132725/@comment-9571656-20150514143927

It lasts a set period of time. It replenishes a bit every 4 seconds 5 times so has a 20second limit, although this can carryover between waves I believe.

I am not sure how much each tick (Tick=the ever 4 second regen) restores but someone on the forum said it was ~25% of her attack.