Venom 15C 4S 4000mAh 14.8V LiPo Drone Battery with Universal 2.0 Plug (XT60/Deans/EC3) x2 packs Engineered for Flight, with "A" Grade Matched Cells 5C Fast Charge Capable: 5C (20A) C Rate and Maximum Continuous Discharge (Amps): 15C (60A) Plug Type: Venom UNI 2.0 Plug. Compatible with XT60 Plug, Deans Plug & EC3 Plug. Proven US Support and Lifetime Battery Replacement Plan.