CNHL Black Series 1500mAh 5S 18.5V 100C Lipo Battery with XT60 Plug HC6001203HV which means you'll need two

which means you'll need two of these 4S batteries connected in series for a complete setup

If you are choosing batteries for the Traxxas Spartan or Traxxas Spartan SR

and other racing buggies or trucks when voltage

which is especially helpful for club fields

CNHL Black Series 1500mAh 5S 18.5V 100C Lipo Battery with XT60 Plug HC6001203HV which means you'll need twoSpecifications: Stock Number: 1501005BK Capacity: 1500mAh Voltage: 18. 5V 5 Cell 5S1P Discharge Rate: 100C Continual 200C Burst Charge Rate: 5C Max Size(1 5mm difference): 47x34x73. 5mm Approx Weight(5g) : 227g Output Connector: XT60 Balance Connector: JST XH Wire (AWG): 12# Package included: 1* CNHL Black Series 1500mAh 5S 18. 5V 100C Lipo Battery with XT60 Plug Compatible RC Models: CNHL Black Series 1500mAh 5S Lipo Battery 100c with XT60 is