Reply To: Recommended microSD card

I personally haven’t used any Sandisk Ultras with our loggers, so I can’t say how it performs.  This guy did a really great test last year with a variety of microSD cards and summarized his findings (particularly on idle current) in a really helpful list:  https://neurotechhub.wustl.edu/micro-sd-card-low-power-showdown-part-ii/