ROCKSOLAR Nomad is the best Lithium-ion polymer battery on the market. It provides powerful, long-lasting power perfect for big jobs, long trips and emergency back-up energy. Couple this reliable energy source with the ROCKSOLAR 60W foldable solar panel and you'll have a great bundle for overlanding, RV camping, van life, mobile homes or any other off-grid sustainability project. This solar panel offers a kickstand design for maximum efficiency coupled with IPX4 waterproof protection against water spray. Additionally, it can be recharged using either an AC wall outlet or the included DC car charger.