Can I connect the Song Meter Micro to an external battery?

No. The Micro does not support connections to external batteries, and must be powered via three AA batteries. Three brand-new, alkaline AA batteries will power the Micro for 200 hours of recording. If you need longer deployment times, our Song Meter Mini and Mini Bat can run on four AAs or up to six 18650 lithium-ion batteries, and our Song Meter SM4 and SM4BAT FS recorders can hold four D batteries or run on external power.

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