I'm trying to find out the current needed to power a Godox MS300 photography flash (Official specs at the end of the page). I'm using the 220V version, and it says that at max power, the output is 300Ws [*1], for which it takes 1.3 seconds to charge.

I'm wondering if it's as straight forward as:

\$\frac{300Ws}{1.3s} = 231W\$

And then

\$\frac{231W}{220V} = 1.05A\$

If I'm getting it wrong, is there a way to calculate the current needed with the data given by the manufacturer? Even an aproximate would work.

*1: The modeling lamp has a 150W consumption, but that is a different light than the flash itself.