Sorry @Miljonaari. I hope I did not high-jack your thread. and sorry to @Grozniy, but I am not familiar with a lot of things about batteries. What is a good middle ground for the them. I mean, I want a good one but I do not want a bulky one either.
I guess, I need to check the clearance from the board to the ground and see If the big ones would fit.
here on the forum.