Alright, tested the voltages again. While running the battery reads 14V steady. I had my brother give me a quick hand. Engine RPM from idle to 3500 RPM had no effect on the voltage. I also turned on most of the electrical systems, which reduced the voltage to ~12.5V. It's not a digital multimeter, so I can't be decimal accurate.
There was one oddity. Before starting the car I checked the battery. It didn't register a voltage. In fact, the needle on the multimeter swung as far below zero as it could. The car was able to start on it's own though, although the cranking speed was slower than normal. After being run for 5 minutes the battery read just over 12V with the car off.
