Ambiant tempreture of ' tin shed ' in summer would hit ,very close to 50°C .
I know that as I recorded a fifty in my Sydney ' tin ' garage, later, I painted a part of the roof white , it dropped a degree or two .
AND, a Lot of my AGM batteries died !.
And , I do mean , close to dozen sitting as weights on the ' dinghy shed .
No more AGM BATTERIES for me . Wet / Flooded .
Today's ambiant temps wil be 38° ish , & when I open my ' tinshed ' garage, I'll check that temp above my work-bench .
spacesailor