"IF" you like State Park Camping. You can stay at Kings Mountain State Park, just down I-85 from Charlotte. They have electric and water on site, no sewer. Nice bath houses, and a dump station.
Also there is Statesville KOA just up I-77. AND if you want to stay closer in. You can try www.visitnc.com/listing/tom-johnson-camping-center-racing-resort. Tom Johnsoncamping center. Now owned by Camping World. But it is closer to Charlotte, and besides the Charlotte Motor Speedway. There is lots of shopping, restaurants, and other activities to chose from.