Battery powered Marble Run 003

Hello, I designed a small case to hide a 18650 rechargable Li-Ion Battery, to power the Marble Run 003 Kit.All you need are:the printed files (Case and Cap)some Glueone 18650 Li-Ion Battery 3.7VTyp-C 5V 18650 TP5056 Lithium-Battery-ChargerSome WiresSoldering iron, tin solderSwitchBatteryholderItemlist:Charger: https://de.aliexpress.com/item/1005004427739715.html?spm=a2g0o.productlist.main.3.435f2e068d2n7R&algo_pvid=970850af-135b-4810-88e5-7d359b0ae6df&algo_exp_id=970850af-135b-4810-88e5-7d359b0ae6df-1&pdp_npi=4%40dis%21EUR%211.56%210.99%21%21%211.59%211.01%21%40211b80c217356473922673657ed4d2%2112000031198236975%21sea%21DE%210%21ABX&curPageLogUid=2vaLsUshWyZE&utparam-url=scene%3Asearch%7Cquery_from%3A Battery: https://de.aliexpress.com/item/10050