E-Skateboard LiPo battery holder (enclosure)

thingiverse

Box for holding 2 5S Lipo batteries at the bottom of a board features 3 slots for XT90 female jacks to be inserted into the box. Two out of three will be used for discharging during charging when it uses balance leads to push voltage in and draws power through main connection to pull it back down to get cells level, while the third is used as a place for a "switch" in form of looped male XT90 with spark resistor in it. Batteries are wired in series but without extra male XT90 inserted it will have an open loop. Includes hole for passing wires to ESC and hole for accessing balance leads for charging. Screws and nuts are standard skateboarding screw and nut size, but likely need longer than regular screws for reaching through plastic since there are a few cm of solid plastic to go through before reaching where the nut gets locked in. Update added updated box with batteries lying flat to get more ground clearance also added a curve to top so it fits tighter to board. Update added new design with battery trays that can slide out. Related to: http://www.thingiverse.com/thing:1864536 Print Settings Printer: Prusa i3 RepRap Guru DIY kit Rafts: No Supports: Yes Resolution: .2mm Infill: 50% at minimum Notes: Beware of warping, this is a big piece for a 200x200mm print bed so will get close to edges and might have some warping. Using an enclosure and printed heat bed I still had some minor warping on one corner where the kapton tape didn't reach and so there wasn't great bed adhesion. It's a long print so make sure you have everything setup right in advance, would also advise just doing a solid infill on this one since you want it to be structurally safe. Post-Printing After printing probably good to give it an acetone bath or "paint" with acetone "juice" but only do this if you take proper precautions to avoid blowing yourself up or knocking yourself out from vapors. This should help to melt layers into each other chemically so there is less of a chance of delamination. Again due to size the orientation you print is somewhat limited unless you want to wait forever for support material this means the force downward from gravity/the batteries will be going against layers in which case weakest link can break and it will fall apart. The walls are 2mm thick which should provide sufficient support, but better safe than sorry. Working with LiPos is dangerous, working with Acetone can be dangerous (especially when you have spark sources like LiPos around, so take proper precautions.