Why doesn't my new battery charge?

About 1.5 months ago I spilled coffee on my laptop. It happens to the best of us. The battery stopped charging, or holding a charge, but the computer worked when connected to the charger, just like a desktop computer. I changed out the battery thinking that was the problem, but now the new battery won’t charge either. I’ve inspected and tried two power cords and different outlets, but still no little green light. Only orange. Any thoughts or experience on what might be the actual issue?