Zyliathor Battery Case – 13S6P 21700 Drop-In Replacement

This is a custom battery enclosure for the Zyliathor frame, designed to replace the original battery housing while maximizing battery capacity.

The case was created from a high-resolution 3D scan of the original frame geometry to ensure an accurate fit and seamless integration with the chassis. It is designed to hold up to 78 × 21700 cells in a 13S6P configuration, making it suitable for high-capacity custom battery builds.

Features

• Direct replacement for the factory battery enclosure

• Designed specifically for the Zyliathor frame

• Based on a 3D scan of the original frame for accurate fitment

• Supports up to 13S6P (78x 21700 cells)

• Space for a BMS inside the enclosure

• Two-piece printable design

• Maintains the original appearance and mounting position

• Easy access for battery assembly and wiring

Notes

• The enclosure was designed around my own battery build and may require minor adjustments depending on your chosen cells, BMS, insulation, and wiring layout.

• Please verify clearances and dimensions before assembling a battery pack.

• Building lithium battery packs requires proper knowledge and safety precautions. Use at your own risk.

Printing Recommendations

• Material: PETG, ASA, ABS, or another temperature-resistant filament

• Nozzle: 0.6

Design Process

The enclosure was reverse-engineered using a 3D scan of the original Zyliathor frame. The goal was to create a battery housing that fits like the factory part while significantly increasing available battery volume for modern 21700 cell configurations.

The multicolor prototype shown in the photos was printed using leftover filament, which explains the unusual color combination.

If you build one, I’d love to see your results. Feel free to post a make or share any improvements!