Reprinted the giant battery pack for my xbox controller using an awesome looking translucent filament. Also used 18650 battery contacts for the case this time. : r/functionalprint
1S1P 3.6V (3.7V) 3500mAh 10A 18650 Battery with Wire Leads - LG MJ1 ce – Liion Wholesale Batteries
High Current 18650 Battery Box Holder Slot Case for DIY Projects – No Soldering Needed, Brass Contacts, Transparent Cover, Interlocking Design, 6-Pack (1 Slot Each), PC+ABS Material – Bistook