Parkside battery adapter

Cover for the step-down converter for the Parkside X20 battery. 
Step-down converter, for example, here: 
https://www.aliexpress.com/item/1005008351428060.html?spm=a2g0o.productlist.main.47.46283aeauDqq68&algo_pvid=1112f2c8 -d4a6-4cc7-aaa1-d27acd07916b&algo_exp_id=1112f2c8-d4a6-4cc7-aaa1-d27acd07916b-44&pdp_ext_f=%7B%22order% 22%3A%22-1%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis%21CZK%2173.29%2144.02%21%21%213.38%212.03%21% 402103846917528280064411456ef36d%2112000044693635315%21sea%21CZ%21857871881%21X&curPageLogUid=Yxq0brZyz3wc& utparam-url=scene%3Asearch%7Cquery_from%3A

The cover is screwed onto:
https://www.printables.com/model/455086-parkside-x20-battery-adaptor/files

Power is supplied from the XT60 connector.