Energy shield duration

Hi everyone,

tl;dr below

I recently made a post about showing the durations of buffs as an overlay.

I use it myself, mainly for BO/BC from CtA, but added other skills as well. I mainly used the equations from https://diablo.fandom.com/wiki to calculate the durations.

The duration calculations I would find in
- https://diablo.fandom.com/wiki/Energy_Shield
- https://diablo-archive.fandom.com/wiki/ ... Diablo_II)
- https://www.theamazonbasin.com/wiki/ind ... rgy_Shield

all show: 84s + 60s*level. On Lvl 33, that should be >30 min, long enough to never run out.
Well it did for me, while the timer happily showed more than 50% of the duration remaining. I looked at the in-game duration times which seem to match up (disclaimer, I did not test them, they are way too long).

tl;dr
all duration calculations I could find on the internet are incorrect, the correct one is: 120s + 24s* level