When not in use, your portable power station must be kept in cool and dry areas. It should not be stored in a place that could heat it or allow it to become damp or exposed to moisture. While it is fine to store your battery in your RV or car while on a vacation, it will reduce its life expectancy. It's a smart idea to keep your portable power source in a cool place. Also, store it at 40-50 percent of its full capacity. This will help prolong the battery's life. You should only keep the battery charged if your area is prone to being affected by natural disasters such as hurricanes or winter storms. You should always have a portable power source ready for emergencies.