This battery cap will hold itself in place with small tabs “hugging” the Battery posts.
The specific design is for the N70T Deep cycle design. This deep cycle battery has secondary smaller 8mm threaded posts for attaching inverters, solar panels etc.
The design of this protective cap will allow for this. Securing itself on the main Battery Post but allowing for coverage and alignment with the secondary post (& attached wingnut).
Recommend that the item is printed in PETG to give the securing tabs enough flex.
The font used is the open source Orbitron font (https://www.theleagueofmoveabletype.com/orbitron)
The author hasn't provided the model origin yet.