I am very happy with this purchase. As someone new to using solar panels to charge portable power supplies, I was pleasantly surprised at how this completes my GOAL ZERO Yeti 400 portable power station in a matter of hours. For those interested, I have a 2019 Jeep JLU and a Dometic CFX3 - 45 fridge in the back of the luggage compartment. The Goal Zero is powered by a power outlet when driving and by a solar panel when parked. All three work well together.