Your portable power station should be stored in a cool, dry place whenever it isn't in use. Don't store it in any location where it could get hot or become exposed to humid or damp conditions. It's fine to keep your power station in your car or RV during a trip, but storing it there all the time will shorten the battery's life. In addition to keeping your portable power station in a climate-controlled space, it's also a good idea to store it with about 40 to 50 percent charge, as that's better for battery life than storing it with a full charge. The exception is that if you live in an area that's prone to power outages from winter storms, hurricane season, or other natural disasters, you'll be better off keeping the battery charged during those times. It's more important to have your portable power station ready to go for an emergency than it is to maximize the battery life.