1/10 scale coleman voltmeter cooler. voltmeter slot is 25.5x15.5mm holes are 33.5mm apart. Slot in the back is big enough for a standard JST plug.
link to waterproof voltmeter :
https://www.aliexpress.us/item/3256804794960598.html?spm=a2g0o.productlist.main.1.859a8Fbr8FbrRr&algo_pvid=92ada67f-d453-4938-bdd1-ea6fe51321cb&algo_exp_id=92ada67f-d453-4938-bdd1-ea6fe51321cb-0&pdp_npi=4%40dis%21USD%212.67%212.67%21%21%212.67%212.67%21%40210324a717224693046724243e5a86%2112000034544196679%21sea%21US%211886644530%21X&curPageLogUid=yEwUwwlspH5B&utparam-url=scene%3Asearch%7Cquery_from%3A
The author remixed this model.
i added a spot for a waterproof voltmeter slot is 25.5x15.5mm holes are 33.5mm apart