I want to use a Nano 33 outside - standalone - with batteries (in fact: with NiMh eneloops for example).
All I find when I search, is a LiPo shield/battery. But LiPo can burn and are not as safe as NiMh batteries.
I did not find any NiMh power solution to my project.
I want a battery life for at least 1 week (I still have to measure the actual current used by my project). I would charge the batteries in an external charger and put them back in to a battery case for the nano.
All I need is a battery case with enough mAh (3+ batteries) which are controlled by it (undervoltage detection etc). Is there no solution for this requirement yet? Exists other, “safe” ways to power a ardunio outside?
I hope someone can shed a light on this, I did not found any informations so far
Thanks in advance!