Nevermind. Misread

The Shield health cooldown time is wrong here. It still starts recharging after 3 seconds.

I tested this in game. I would use whip-shot immediately after taking shield damage. My shield would start recharging before whip-shot cooldown ended.
It’s definitely 3 seconds.

Are you sure you are looking at when the barrier is destroyed or are you looking at only when it takes damage?

Oh you’re right. I misread that.

The cooldown is for when it is destroyed not when you drop it to do something else. When you put the shield away it starts regen after 2 seconds.