I have a device that runs at 5v at 1amp. I am looking for a way to increase battery life without modifying the device itself.
I know that some electronics (for instance a 5v wall wart) allows for 2.1amp output at 5 volts and have 100-240v inputs which draw 0.3a. Could I apply a similar concept with a voltage regulator or some other device to work with batteries?
For instance if I was running off 3 lipo cells in series (11.1v), if I ran my device off a 5v regulator from the 11.1v battery source, would I draw less current from the battery source (and thus extending battery life) than if I were to use a 5v battery source directly?
Any explanations or math/logic behind this concept would be appreciated.