Salt has four powerful 9V/12V rechargeable batteries, so the runtime at maximum brightness is
approx. 12 hours in Clear Light mode
approx. 10 hours in Golden Light mode
approx. 8 hours in Sunset Orange mode
However, you will want to keep dimming Salt and changing its light color so that it can shine for up to 150 hours at medium power.
At the lowest dimming level in Clear Light mode, Salt even has a runtime of up to 500 hours.
With a compatible USB-C PD (Power Delivery) charger, Salt is fully recharged within approx. 2 hours.
You can find information on which chargers you can use here.