Connect it and leave it. Bluetti PV120 Solar Panels, 120W is designed to keep your solar generators powered up for as long as there is sunlight.
The PV120, made of monocrystalline solar cells, can convert up to 23.4% of sunshine into solar energy, allowing you to charge your solar generators even in terrible weather.
The ETFE covering and IP65 junction box is built to endure scratches and water splashes, making it ideal for camping, fishing, trekking, and other outdoor activities. (Avoid rain or soak in water.)