Review on 🔋 POWISER 7.5W Solar Car Battery Trickle Charger & Maintainer - 12V Solar Panel Power Charger Kit for Automotive, Motorcycle, Boat, Marine, RV, Trailer, Powersports, Snowmobile, and more by Troy Simpson

This product works. I measured the voltage of a car battery with a multimeter every other day for a month and this solar panel did the job. He charged it and kept my battery fully charged. If your battery is dead and needs to be fully charged, this may not be enough to fully charge it in a short period of time. The goal is to charge enough to keep it at full capacity. I highly recommend this and will update this review if the product's effectiveness diminishes over time. I'm happy with that at the moment.