dead battery...nope something else

[bgpilot1]

Flew a short cross country a week ago and after the plane sat on the ground for 6 hours, it wouldn't start.  Had it jumped and it started right up, flew home no problems.  Generator charged fine.  Battery tested fine.  I did notice that the generator had gone offline during takeoff but when I backed off to 25 squared the yellow undercharge light went off an no other events.

So I got to troubleshooting.  Turns out there was a bit of corrosion on the negative ground wire going from the frame to the battery.  Cleaned that off, recharged the battery fully and no problems.  Lesson learned...and an easy one!

Barry