MacBook Battery Issue After Water Spill

Hey, I spilled water by accident on my M1 Pro Macbook 16 inch. I dried it and left it suspended for a week to let the water leave. Everything still functions as it should minus the battery. The laptop works when plugged in, but the battery does not charge, so the second the cable is unplugged, the mac instantly dies. Would a battery replacement suffice? Also checking the device diagnostics twice reveals that all other functions are fine minus the battery, but Apple charges $2000 for the repair as they want to replace every component.