Hello, I am looking to build a power supply that can supply at least between 15,000 and 30,000 mAh at about 7V
I have considered wiring a group of double A batteries in both series and parallel but have determined that I would need atleast 25 batteries to achieve this…
As my project has space constraints I am wondering if anyone has an opinion of a different setup/ battery type or has some insight for me.
My project is consuming about 160 mA and I would like to have the battery last at the very least three days but was hoping for between 4 and 5!
It is an arduino uno with a GPS shield, I have seen GPS systems in retail that have batteries that last weeks and have a very compact design.
How is it that this is achieved? How can I achieve even three days without having so many batteries?
Any help will be appreciated!