About battery spec

I found two types of 18650 batteries, one is 3.7v the other is 4.2v, which one should I prepare for a uConsole?

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Same thing? 4.2v is the charging voltage while 3.7v is the nominal voltage.

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I don’t think so, many sellers marked explicitly about the two specs.

I think that’s exactly what yatli said.

Dimensions matter! battery choice for the DevTerm is really critical - the Cells I bought are tight and the battery just barely fits and the cover is really tightly bound…