I'm not an engineer, I'm a software guy getting into hardware - so bear with my ignorance!
I'm in the process of building a system with many components (e.g. a computer, many sensors, a few motors, a servo, etc). These will all be powered by a bank of batteries (size and composition TBD).
I know the operating voltage and current of all the components of the system, and am looking to make an estimate regarding the power consumption of the entire system. The highest device voltage is 7V, the lowest is 3v. The battery bank will likely be a collection of smaller batteries rather than a single large battery.
If I have a battery bank capacity of say "x"Ah, how can I go about estimating how long the power supply will power my system?
Can I simply just sum the wattage of the individual components, divide by the hypothetical battery voltage and then use that result as the system current [amps]?, or is it more complicated then that (I'm assuming so!).
Thanks in advance!