Model printed well!
I'm curious what the largest size battery you've used with this is? I have a 6ah that feels really heavy and I'm not sure I want to test it out on that first. Going to stick with using this for just the smaller 2.5ah for now, unless you've had good experience with the larger ones?
I've used both the 4 Ah and the 5 Ah batteries on it (currently in use). My original design put the screws through the main flat plate (attached image). You could see that there was a little gap at the sides where the battery was loading the mount, so I put the screws in the sides to cut way down on the bending load and that made a huge difference. If you try with the bigger battery and it works out, let me know how it works out!