I have found this solar pannel ( https://fr.aliexpress.com/item/Suaoki-60-w-Panneau-Solaire-5-v-USB-et-18-v-DC-Sortie-Portable-Pliable-Puissance/32935273533.html?spm=a2g0w.search0126.96.36.199f714267rqy4Q1&priceBeautifyAB=0 ).
I am already using another one, smaller, for charging usb powerbanks while traveling and it does the job well.
I have now found a DC to magsafe 2 adapter that suits the 60W solar pannel.
The Apple DC power magsafe 2 for the Macbook has the follwing written on it : "Output - 20v / 4.25A max."
Is this solar pannel suitable ?
What should I be looking for when looking for power appliances to charge this Macbook ( W, v, A )?
Thank you for your answers.