Yup. Nothing i can do about it. I have that belt super tight.I get that little startup squeak also on my tm. And my belts are tight and new.
One of my tm's is grounded to the body of the van. To boost it I just run a single booster cable from the trucks battery to the unit battery.I keep a spare battery in the garage and charge it once a year and since all my jobs are 3 minutes from the house it wouldn't be a big deal to go home and get it but I also keep jumper cables in case I need to do a heart transplant..
Barley touch the inside of the belt wit a bar of soap....OR if you feel particularly adventurous scuff theI get that little startup squeak also on my tm. And my belts are tight and new.