Travel Vehicle Solar Panel Trickle Kit Battery Charging Tool 20w - 12v

I have only tried it out once but was not impressed because the supplied clips that came with it are way too tiny for the cost of a small solar panel kit that I paid over $70 for. I have used that size clips before and they break easily. I had expected to connect my phone directly to the solar panel but the User Manual states it "is not recommended to charge the mobile phone directly. It should be used together with the charging bank, which can be used to charge the mobile phone, tablet computer and other electronic products." That means I need to use two phone cables (one from my phone to a charging bank and another one from the charging bank to the solar panel.) That was not a good surprise because it's simpler having one cable connected to the solar panel and needing two means more cables dangling and getting in the way. When I used the solar panel kit as directed, it stopped working after a short while. For the inconvenience, low wattage and poor quality clips it should have been cheaper.