Gridfinity Battery Trays (AA & AAA) - perfect fit

Two Battery Trays for AA & AAA Batterys based on the design Gridfinity Battery Boxes AA & AAA from MakerBunny. Unfortunately, on his design the slots on the sides, especially the corners, are very tight due to the overhanging ledge - This remix fixes this issue. The Gridfinity boxes have the following size:AAA battery holder for 42 (7x7) batteries - 2x2x4 uAA battery holder for 40 (4x8) batteries - 3x2x4 u For eveyone, who likes the dual color / accent lip theme, the color