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4 stars = very good. It has a very strong light, its durability needs to be tested over time although it shows relatively good construction and relatively good construction materials, I liked the rubbery (rubber?) texture of the black base. I did not use the charging cables from the household or car charger at all as they did not seem reliable to me. I used it one night (the first one) using its initial charge, the next day I left it in the sun for 8-10 hours (the red charging light remained on even when it was partially cloudy) and the lighting the second night was consistently good, although noticeably weaker. In case the solar panel does not work or there is no sunlight, there is the possibility of charging it through the crank or with the use of batteries, which is why I did not want to try charging it with a cable. Additionally, one of the reasons for acquiring a solar-powered device is the independence from electricity, which is why it was purchased and evaluated as such. I will provide an update of the evaluation in due time.
EDIT September 2023, over 1 year after purchase: It survived its second summer and works perfectly fine! I have NEVER charged it with a cable, I have NEVER used batteries, so the only source of energy was the sun, approximately 8 hours every day. Also, it survived a fall from a height of 2 meters and, although the detachable panel came off, I put it back on and it works perfectly fine. For these two reasons, I am increasing the stars of the evaluation to 5, in my opinion, it was worth the money and it continues to function!