That's a little big, 18650s are supposed to be 18x65.0mm (which is where they got the name 18650), though I'd believe it if your particular cell wasn't exactly the right sizePanasonic 18650 dimensions: 65.3mm tall, 18.5mm diameter
The dimensions I'm using are the maximum sizes mentioned on the datasheet. I believe it's better to measure bigger than smaller to be safe. That thickness is just for the PCB, however I've also measured the height of the CPU/GPU. They are about 2.75mm tall from the top of the board. So total height of the board + CPU/GPU is about 4.1mm.That's a little big, 18650s are supposed to be 18x65.0mm (which is where they got the name 18650), though I'd believe it if your particular cell wasn't exactly the right size
Also, is the Wii PCB thickness including the CPU/GPU/other part thickness, or is it *just* the PCB itself?