Question on propane generators

[Morefun]

We're looking at a Champion inverter generator that runs propane. It says "30 hours" but I can't find if that is 30 hrs on a 20lb tank or 30 hrs on a gallon of propane.
Any know?

 

[XERTYX]

https://www.championpowerequipment.com/product/100900-2000-watt-dual-fuel-inverter/

I'd say 20lb.
"Our 2000-watt inverter is one of the lightest in the industry and features Dual Fuel allowing the 79cc engine to run on gasoline or propane. Enjoy the quiet 53 dBA for up to 11.5 hours on gasoline or up to 34 hours with a 20-lb propane tank"

 

[Camper]

I have that generator and it's 100% perfect for me.

Here it is:

https://www.amazon.com/gp/product/B08J9NZ9D7/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

 

[abnorm]

^""When using a 20-pound propane tank, it produces 2000 starting watts and 1530 running watts and will run for up to 34 hours at 25% load. ""

 

[Morefun]

Thanks. A tank for that amount of time is to costly for me.