This is the Traxxas Power Cell iD 7.4V 5800mAh 25C 2S LiPo Battery.
Semi rigid construction does not require a hard case and eliminates wire harness connectors that can loosen and fail Engineered specifically to fit Traxxas models New high current connector with gold-plated copper terminals and integrated balance connector iD Auto Battery Identification allows Traxxas iD equipped chargers to automatically set and optimize charge settings for specific battery MAXX cable high-efficiency 12 gauge silicone jacketed wire
Traxxas Power Cell 7.4V 5800mAh 25C LiPo 2S Battery with High Current Connector
LiPo compatible charger such as the Traxxas EZ-Peak Plus, TRAP2970 LiPo charging bag
Configuration: 2S2P Continuous Discharge: 25C (145A) Max Burst Rate: 50C (290A) Watt Hours: 42.92 Charge Rate: 1C (5.8A) Max Charge Rate: 2C (11.6A) Dimensions: 5.3 x 0.98 x 1.8" (135 x 25 x 45mm) Weight: 10.2oz (290g)