Venom Fly 30C 3S 450mAh 11.1V LiPo Battery with JST Plug x2 Pack Combo - Compare to E-flite EFLB4503SJ30 Fits Models Like: E-flite Viking Model 12 280, Inverza 280, and Adagio 280 Venom Fly - Engineered for Flight, with "A" Grade Matched Cells for Unrivaled Performance. Spend Less Time Charging and More Time Flying. 5C Charge Capable for Significantly Faster Charging. Plug Type: JST Backed with Proven US Support and Venom&apos;s Industry Leading Lifetime Battery Replacement Plan.