If I'm at the track I will always have my 12v power supply powering up my Junsi ICharger, Tire Warmers, etc. This solder iron from AM Arrowmax works amazing!

It's currently out of stock at Amain, but you may be able to find it elsewhere. It heats up very quickly and cools off pretty fast too. Zero complaints.

https://www.amainhobbies.com/am-arro...74021/p1240521