i was very disappointed with this product because there is no indicator to let me know when this product is fully charged or its current charge level.also, after it is fully charged it doesn't stop charging unless i unplug the adapter leading to over charging, and since i have no way of knowing what the charge level is i can ruin the battery to boot.in essence this item is useless because i never know how charged it is, thus how long i can count on it when i need it.also the solar panel arms are plastic and when i moved the panel it felt like it could easily break.that said, i gave it two stars because once it is charged it gives off a descent amount of light.