This part is already in Mecabricks... https://www.mecabricks.com/en/partmanager?part=28740d1

hi, i was working in the workshop and notice the absence of the big figures models, are you planning to add them at some point?

Okay found it, but how about this one:

https://www.bricklink.com/v2/catalog/catalogitem.page?P=bb0892c01&name=Electric%209V%20Battery%20Box%20Powered%20Up%20Bluetooth%20HUB%20with%20Light%20Bluish%20Gray%20Bottom&category=%5BElectric,%20Battery%20Box%5D#T=C&C=1

Can you guide me to use the library for part search ? I cant find any tips for searching. You foudn the previous part but i didnt.

Usually im using BrickLink, paste the code from the instructions book and then copy-paste the Item No. from BrickLink into mecabrick search box, but did not found anything. For example for this particular piece im trying to find, the Electric Batery if you paste "bb0892c01" nothing happens.

If you are using the BrickLink ID and it doesn't show anything, that most of the times means that the part is not available.