DigiKey Part Number 1528-1857-ND - Connector pitch and polarity

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What is the pitch and polarity for the Adafruit:

3.7 V Lithium-Ion Polymer Battery Rechargeable (Secondary) 2Ah

Digikey Part number 1528-1857-ND

Hello ajg, welcome to the TechForum! The red wire should be the positive voltage side. The pitch of the JST PH connector should be 2mm according to the documentation I found on the housing it most likely uses, click here.