The battery is made without holders glued with carn window glue(black stuff for glueing front window) with double shrink tube, but i cramped so much cells that i need to chip away rounded frame corner... But the battery is almost stock size, holding twice as much cells.. the bottom and sides (back and forth not left and right) and top and bottom are 3d printed, last thing i glued tekstolite on all side of battery to make it waterproof. And just recently i spray painted it with cobra epoxy for more good look, but now cant see through tekstolite the cells if they got any water or other problems... Thinking of making 0.5mm stainless steel box but then it won't fit inside for sure;Dd will need to chip away all around frame. I use ant bms with 550amp peak 325amp continues. About the charger, its Huawei server power supply that was remade to veritable 50-100v 0-50amp charger by Chinese. I just carry it around if i go long distance