I didn't get any constant numbers with the nTB 13" MacBook Pro. 16GB Ram and 512SSD. I returned it and I feel like it had some hardware issues. Like one day when it got below 50% battery life, the battery ticked away to 0% in 25mins, using the same Watt pulling as the previous 100% to 50%.
Some people say its software, but I have a feeling it's something more sinister.. Like hardware. Its almost like once in a while it jumps around between cells, like a bad battery controller.
I didn't trust it, but a lot of people are just accepting the inconsistency. Its really a cool looking machine, just a horrible battery, OH and only two USB-C inputs(LAME!!)