2008 Tomberlin Emerge Battery Issue (died on the way home)

[portland]

I purchased an Emerge in October this year and have ~160 miles on it. I primarily use my vehicle to golf. Per round, I put about 13-14 miles on it (that includes the 6 miles round trip to and from my home). Never any issue with the battery (the battery meter is normally around 1/4 when I get home)

Yesterday, we had a shotgun start, and my starting hole happened to be the furthest point from the club house. So, add another 3 miles or so total.

Long story short, on the way home my Emerge died on me. Outdoor Temp was 40-50 degrees the entire time, I had 1 passenger with me.


Is there any way to check if any of my batteries are bad? Its not easy for me to get my Emerge to the dealer since he is about 50 miles from me.


FYI, I always leave my vehicle plugged in. In this case, I had not driven it in 7 days.



One other thing, on a full charge, after about 3 miles of driving, the battery meter always goes to half. Its been this way ever since I purchased the vehicle.