Installing the JK-BMS in a Seplos MASON DIY Box? Well, it's not that easy... but here is how!

Опубликовано: 28 Март 2026
на канале: Off-Grid Garage
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I'm pulling the Seplos Mason Battery Boxes out of the corner. Today, I want to replace the Seplos BMS V1 with a JK-BMS. This seems to be a challenging mission as nothing seems to fit. All mounting options and cutouts are different, and we also need to make a big opening for the JK communication ports. Not to mention the question on how to install a JK-display in the front panel...
Thankfully, we have this 3D printer which is a fantastic tool and helps a ton in designing and printing all kind of adapters, mounts and carriers for this project.


SEPLOS MASON DIY Battery box (24V and 48V version):
https://off-grid-garage.com/diy-kits/

EVA Tape 'Sticky Foam' and Epoxy Sheets:
https://off-grid-garage.com/electric-...

Two Tree SP-5 3D printer. A new tool for the garage:
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https://off-grid-garage.com/accessories/

All 3D parts as shown in the video.
Go to https://www.tinkercad.com/ and search for offgridgarageaustralia
(You may have to create a free account to access my designs, search for OGGA afterwards)

JK-BMS comms front panel, designed by Aydin:
https://www.thingiverse.com/thing:650...

SEPLOS MASON 6.9 Kit. Building a battery was never that easy (and fast).
   • SEPLOS MASON 6.9 Kit. Building a battery w...  

Automate your Active Balancer to become a NEEY! (almost)
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Voltage Detection Controller:
https://off-grid-garage.com/accessories/

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