That funky 3s/4s battery powered soldering iron is on offer right now at BG for a mere £30...
This is an utter bargain for a fully TC controlled Iron, supposed to be saving, feck, want...
Only until Saturday the 9th I think...
Usual price on BG and around elsewhere on WWW is £60 ish...
Get it while it's hot!!!
https://www.banggood.com/MINI-TS100-Digital-OLED-Programable-Interface-DC-5525-Soldering-Iron-Station-Built-in-STM32-Chip-p-984214.html?rmmds=collection&utmid=1951