SMH. I need a Shimano di2 battery in St. George🤦‍♂️

I’m traveling to St. George to get some winter riding. I charged my battery before I left but I didn’t pack it. 🤦‍♂️🤦‍♂️🤦‍♂️. Any shops in town have the battery in stock? I’m traveling thru Salt Lake City right now.