All dressed up with nowhere to go

@Boog have you tried star washers for your battery cable?
I have not brother. And I also have not moved to quick release seat pins either. I know using different washers is the key to keeping the nuts and bolts tight. I thin one problem is having two different sets of leads coming off is a problem too. One lead is for my heated gear and the other is for a tender.
 
I have bit of kit to discuss here:...

Right now, my starting issues revolve around the negative cable getting loose every few weeks and I have to retighten it.

I hope this helps some....

Sounds like weakening in the wrist...should work on that
 

I did exactly the same this morning. Battery flat when ok day before. I suspect change in temp. 20 MIN charge all ok.