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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Source code: https://github.com/dr-mod/guardian-duck
As for the bigger battery, yes the duck has room for a battery with more capacity. But I'd say the way to improve the ducks longevity would be to tap into the other Picos power saving modes that I wasn't able to achieve with CircuitPython. I was able to achieve 2.3 mA in deep sleep mode for my Little Sun Gazer Project https://github.com/dr-mod/little-sun-gazer , but it's written in C.
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