Minimum Battery Voltage

The Song Meter Mini 2 is programmed to shut down just before batteries are expected to fail, but different battery types can cause this behavior to vary.

The programmed voltage cutoff is based on typical behavior of 18650 lithium-ion or alkaline AA batteries. During real deployments, the Song Meter Mini 2 may lose power at a higher battery voltage based on factors like ambient temperature or varying battery performance..

In particular, lithium iron disulfide batteries will often die at significantly higher voltages due to their flat voltage discharge curve.