Kind of a dead thread here but I figured this was the best place to put this. I made a crude 3d printed battery holder for the T6.2 and thought I would share it. I had tried others on the web but they couldn't put the battery in the full forward position. This one can but can go back all the way (I only run carpet and turf). Feel free to play with the model and improve it.

https://www.thingiverse.com/thing:6810961