Looking for ways to power a pi5 project, and needing to have 5V 5A available. Would like to have a system that generally runs off of mains power but has battery backup capability when power is lost.
Looking to use a 21700 battery, like the Nitecore NL2160HP 6000mAh. It can sustain 5A discharge rates. Taking general power most likely from official Pi power supply. At them moment I believe the battery can take higher than the 1.5C rate to recharge but I don’t need to mess with that atm. Looking at the discharge rate that the Babysitter can provide, I think I can customize how much amps it can deliver by cutting Ilim and calculating resistor I need there? Can it handle 5A? I am adding fast break fuse between battery and babysitter, polyfuse just before load, and was planning to add a TVS diode to help handle V spikes - not to mention some capacitors between battery and babysitter and just before load. I was think going to add a boost, perhaps something like the Pololu U3V50F5 that will step up to 5V and can handle 5A. Are there other ideas here, or things I’m missing? Can the babysitter do this? I didn’t really want to go and design my own charging path load sharing device…