Hakko T12 double soldering station, parkside x20v battery powered

UPDATE:
FOUND BIG PROBLEM:
In parkside there is "stupid" BMS. It can NOT disconnect load.
So you can destroy your battery by total discharging it!!

This is double soldering station for hakkto t12:
https://www.ebay.com/itm/New-Digital-LED-Soldering-Iron-Station-Welding-Soldering-DIY-Kits-for-HAKKO-T12/221992663130?epid=721001633&hash=item33afcb385a:g:AxYAAOSw~e5ZVaDT:rk:1:pf:1&frcectupt=true

there are two this kits.

These kits are powered throught:
https://www.ebay.com/itm/150W-