I have a cub cadet lt50 model. Last week i tried to start the mower and it was having trouble turning over. Eventually it said low battery and stopped trying to turn over. So I replaced the battery and it ran just fine. Today I went to cut the grass and the had the same problem. I tried to jump start the mower and could not. When hooked up to jump start the mower acted the same way, trying to turn over then eventually stalling. Any ideas?