Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works great

This is the second time we have purchased this solar charger, the first was for our boat battery, since the boat sits most of the winter months, the charger helps keep the battery charged so it will start up right away after a long period of in activity. My husband recently purchased a second solar panel for the truck that also sits unused a lot. If the second one works as well as the first, we will be very happy.