Popped the windows and separated the door.
Modified the internal shape to hold the battery block.
The door's mesh is a mess cause I didnt have time to remodel it properly before christmas (this is a gift). But most slicers will just ignore the small artefacts si I didnt bother removing them.
The windows have been sealed with transparent glue. Same was used on the door.
The author remixed this model.
Popped the windows and separated the door.
Modified the internal shape to hold the battery block.