Xiaomi M365 45 mm battery raiser (compartment for additional stock battery)

thingiverse

This is rework of BotoXbz "Xiaomi M365 Bottom Cover 5.5mm Spacer (for 12S4P Battery)" project. The intention here is to add another stock battery to your scooted underneath the original board. To do that you need to install full suspension to your xiaomi to rise it a bit (otherwise clearance to the ground will be insufficient). I use it with Monorim suspension successfuly. Usage: you need to exchange bottom plate with metal one. mount second battery to that plate by drilling holes and using screws. Next mount this print on + bottom plate of your choice. You need special conical screws M3x60 (quite long for the size) best with allen key head. Electrical connection is not scope of this info but you need XT30 Y cable, additional cable wired to charging port (for second battery). And finally you need to mod firmware of the scooter with "allow ride while charging" feature. Important before both batteries will be connected tohether they need to be at the same SOC (state of charge). Best fully charged. If they are not - one will start to charge the other with uncontrolled (absurdly high) current. This will fry BMS at best and will cause fire at worst. Changes to the model: height 45 mm, added some slack/allowances on adjacent surfaces to make up for printing inpresision. Use glue to clear these spaces and keep everything watertight.