I'm working on my project which is powered by a 5v 6A power adapter (DC Plug), and currently working on making it portable, and changing the main power plug to a Micro USB.
I'm in the process of researching for a Lithium polymer circuit/module and step up module from 3.7 to 5V or step down module from 7.4 to 5V (haven't decided yet any advice ?)
The average consumption is about 400 mAh but it could reach at times up to 5A (extremely rare, and the code limits that as well) most of the spikes goes up to 2A for less than 3 seconds.
The size of the enclosure is 80-90mm x 50-60mm (I'm thinking of placing the batteries on the case bottom part)
I'm aiming for a run time of about 2 - 2.5 hours, so maybe 1300mah (5C) flat lipo battery would be a nice fit
Also I would like to know what is this "3DPT" component they used in this example: https://learn.adafruit.com/multi-cell-lipo-charging/simple-balance-charger Couldn't find info on google, those this module switch automatically or is it manual, how is the actual switching works.
Any Suggestions ? If its better to use 7.4v (2 batteries) and step down module please let me know... What are my options of turning my project portable ?