So I came back after not driving my Soul after 10 days to find that the battery was completely dead. I used the key to manually unlock my doors, and when I turned the ignition there was nothing. Luckily I had the booster cables I purchased before I went on my trip to boost me. Forward a few days and it's time to replace my battery.
If anyone needs to replace the battery on a 2010 Soul 4u with the 2.0L engine, the battery code that will come up it 121R for sizing. I went to my local Costco to pick up a new battery, but sadly they don't stock that size. I guess 121R is not a common size as it dimensions were on the smaller size.
Never the less I bought one at Parts Source, and after a 15 minute install my Soul was once again running.
Now here's the thing, everyone's books/manuals/catalogues showed that the battery size was 121R. When you actually install it, the battery is significantly smaller in width and length than OEM. my battery blanket doesn't even touch t3 sides of the replaced battery. I'm guessing that the mounting has more to do with the sizing but i will head to parts source again to see if the 124R will fit....