2S 7.4V 2000MAH 25C Lipo battery with EC3 CONNECTOR
https://www.ludingtonhobbies.com/shop/2s2000-25e-2s-7-4v-2000mah-25c-lipo-battery-with-ec3-connector-14560
https://www.ludingtonhobbies.com/web/image/product.template/14560/image_1920?unique=271e67e
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Manufacturer's Part #: 2S2000-25E