Parkside Team X20V battery socket with ZK-5KX - CC CV 0.6-36V 5A boost converter, QC4.0 USB A/C charger and XT60 battery socket.
USB charger and XT60 socket case is optional.
Used boost converter:
https://www.aliexpress.com/item/1005001977820767.html
Used USB charger:
https://www.aliexpress.com/item/4000315671112.html
Used banana socket:
https://www.aliexpress.com/item/1005003943304682.html
XT-60 panel socket:
https://www.aliexpress.com/item/1005003693933120.html
Resettable Fuses:
https://www.aliexpress.com/item/1005002580739912.html
Tinkercad link for design modifications:
https://www.tinkercad.com/things/iLtPlENgz5A
The author remixed this model.