Good question, probably depends a lot on how much energy actually makes it to the target some distance away. And then how much is actually absorbed. Probably depends more on the power density then, rather than total power?

Can't imagine they get a very small spot at multiple km unless they use gigantic lenses or multiple independent laser focused on the same spot

Is that output power of the laser? If it's input power, it doesn't really seem that high. Some US homes could draw 100kW if charging multiple EVs etc.

I guess they are using it in pulsed mode, continuous mode would be a little bit much power

Huh, to what degree is this technology gatekept by battery advances?

A few decades ago lasers were dismissed because they involved chemical reagents for high power and explosive capacitors for even low-power applications.

Hm, you think longer than the laser is firing? Could there be windup?

Depends on how tightly they can focus the beam.

http://panoptesv.com/SciFi/LaserDeathRay/DamageFromLaser.php

few seconds. it (lower power version) was deployed during war with hezbollah and intercepted 40 drones (big one, not fpv).

there is footage of intercepts out there. was released about half an year ago