Charges 1% in 2 hours (in the blazing sun)

Mine charges really slow. And when not connected to my phone it takes days to indicate full charge and then when I plug it into my phone it's dead in ten minutes.

the fun part about this solar powerbanks is.. some of them don't even have real solar panels.. some of them have fake panels. i watched reviews on youtube from tech guys who found out that some of this powerbanks seem to have solarpanels on it, but they are fake without a function.. so it's really "meh". if there would be real good powerbanks with solarpanels i would buy them..but yeah.. there don't seems do be good ones on the market.