I have several empty battery cases here at this time and it should not cost much to ship them.
Can either sell them or loan them with deposit. Pay shipping both ways.
Many false starts on fitment in a Think. This may put the question to bed.
If it doesn’t fit, check this out. Same battery, or more capacity/voltage, but different dimensions.
+$500 for being custom built. Unless you want it as a kit. DIY.
36" x 11" x 7" for up to 25 cells. (24s is normal limit for GE controllers)