Can I connect Nano without it automatically charging?

My shuffle was cooking marshmellows yesterday, the battery was fairly hot. I've found no way around this issue, just have to take it with a pinch of salt.

 

No, the nano will charge no matter what. Don't worry though, the battery won't be adversely affected - it's been a while since batteries had a memory and had to be completely discharged before charging again. Your nano won't be hurt by it at all.