[Edit: I didn't see Coulomb's post above until I had completed this post.]
rhills wrote: ↑
Fri, 20 Jul 2018, 00:21
Can you make PCBs in shapes other than rectangular?
Could you make a cell-top monitor in a broad U-shape to fit around the vent?
Sure. We could even make them with a hole in the middle for the vent. But there's a significant manufacturing setup cost for any new design, and the CMUs we already have, in stock, were designed to fit almost anything.
With the idea of standoffs or stacks of washers, Coulomb is presumably considering using the hole at 112 on the ruler, and either breaking out the piece at 185, or filing both holes towards each other by 1 mm so that the terminal bolts are at 113 and 191 (78 mm apart). I'm referring to the lowest CMU in the image above.
But they were also designed for another option, which doesn't require standoffs or washers. They can be bolted to one terminal only, and have flying leads to the other terminal, using a piece designed to be snapped off, and have wires soldered for this purpose. In this case you'd snap off the piece at 103 for the negative terminal, and bolt the CMU to the positive terminal using the hole at 193, swung to one side of the vent, at about 45 degrees.
That suggests a third option. The spec sheet says the cells are 78 mm wide. Pythagoras says that makes it 110 mm between diagonally opposite terminals. The two outermost CMU holes would reach if they were filed away from each other by 2 mm each. 85 and 195 on the ruler.