Bosch GSR 12V battery.
by sni256andr, published
LiPoly 3x18650 Replacement of original NiCd.
I printed without support. However, be careful - the "stem" is hollow.
The holes for the cap are 3mm, holes in the cap - about 3.5mm, => use self-tapering bolts. Cap is needed to hold main charging port (T-deans) and a bundle of balancing wires.