Bests & Worsts Reviews from Amazon

We bought this for a trip to Yellowstone expecting it to solar charge. The first two words of this product's description is "Solar Charger". This is not a usable solar charge. This device has 20000mAh. Can any of you find how much solar charge this device can charge via the sun in one hour? I'll wait....I looked myself. Couldn't find it. Best I can tell from internet research after purchasing this "Solar Charger" is that in OPTIMAL CONDITIONS (bright, clear sky) this devise charges at a rate of 200 mAh. SO, if you need this advertised "Solar Charger" to...solar charge it would take 100 HOURS of optimal, cloud free, bright, clear, unobstructed sunlight to charge. This product is a gimmick. Do not buy it if you need a portable solar charger