The specs on that solar panel are closer to 8 ounces, what panel is 3 ounces? I might be interested in one. Mines a 5 watt, weighs 5.5 oz.so basically the same weight for the panel and a 10000mah battery as a 20000 mah battery, but I can recharge in the field indefinitely. That’s how I look at it.Has worked great for years, fills up the battery pack at camp while I’m hunting. Haven’t found the limit yet doing that, but I’m in Arizona so plenty of sun usually.
I don’t know if it helps you, but I’m just finishing up testing stoves as we speak. The brs is averaging 7 grams of fuel to boil 16.9 oz (2 peak refuels plus a bit) of cool water, in a 650 ml titanium cup, no lid. So for me, I’ll plan on 10 grams per boil,to be safe,to account for wind,elevation, colder temps etc burning more fuel.
For me, it would take between 2 and 3 weeks of 2 meals per day for the higher efficiency of the jetboil to overcome the weight difference between it and the brs/cup setup.
To me, there’s a clear winner