The company plays dumb, and Amazon will not change anything, but resell this scrap, since there are so many positive reviews!
Who expects that on a solar product with a non-removable battery?
That's worst consumer-inside-deception !!
Unfortunately, many reviews are completed too early. Many do not throw away working items rather to demand rather than a refund. Therefore company respond + amazon also so and criticism is dismissed as an isolated case.
I did everything get refunded after about 1 year, thanks to the commitment of two Amazon staff.
Pity a really nice product with lots of beautiful colors can be offered! If the battery is replaceable, I would order again.