Eufy 2c/2c pro - Which uses more power at night: Light or IR?

New to the Eufy 2c and 2c pro. In order to maximize battery power, does the light or IR sensor use the least power?

I’m lucky in the sense that both the light and IR modes illuminate my entire backyard. I’m leaning towards the IR as it’s more discreet.

Any input from experienced owners would be appreciated. Thanks

I’d say IR. Using the light drains