Holds up to 10s4p 18650 and charged through the magnetic Rosenberger LEV plug, therefore it works with 36v ebike chargers.
Two parts to work with desktop printers, and has a lip to join the parts. Preferably glue them together for waterproofing, and add foam between the enclosure and skateboard deck.
Rosenberger Ropd:
http://www.rosenberger.de/en/products/automotive/ropd.php
Can be purchased in EU here:
http://www.linergy-shop.de/de/Rosenberger-Power-Data-RoPD--Gehaeusebuchse-716.html
Display:
https://www.amazon.de/gp/product/B01LW8DAIU/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1
For the switch, just drill a hole out for whatever you like.
The Charger I personaly use is the BMZ 5A ebike charger:
http://www.bmz-group.com/Chargers/EN_index_1200_.html?ida=1580
The author marked this model as their own original creation.