Venom Fly 30C 2S 800mAh 7.4V LiPo Battery with JST Plug x4 Pack Combo - Compare to E-flite EFLB8002SJ30 Fits Models Like: E-flite Fokker DVII 250, Nieuport 17 250, and Blade 200 QX 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.