Tractor battery question

[southpaw]

I've been having battery issues. After setting for a week or two my tractor battery will be dead, even though I'm disconnecting the battery after having ran it for a while. I've since pulled the battery and put a good charge on it and left it setting on my work bench. It started off at 13.28 volts and over about 8 days it has dropped to 13.04 volts. Does this sound normal?

[Matt_C]

Check each cell with a specific gravity indicator if possible. It not, take into Napa or parts store and have it tested.

[Shiner]

13 v after 8 days is great. But, it needs to be load tested. if it is unhooked and dead after 2 weeks, then you need a new battery