Sorry for not using the question template, but I don't have any relevant information, like equations or solution attempts at this, since I literally have no idea where to start. Google has failed me. This isn't necessarily a homework problem, but it is for part of a project I am working on. Long story short, I will be very happy if I can find some way to monitor the remaining battery power on a 15000mA battery, two 5V outputs (one 2A and one 1A) and one 12V output. If I can build some relatively basic circuit to detect this, then hopefully I can use a microcontroller to transform an analog signal into digital data, so that eventually I can have a digital readout of the remaining battery life. I have been told by a professor that this is extremely difficult, to the point that we should give up on it... but I am not quite ready to do that, so I have come here to seek a second opinion. Thanks!