This is the Completer Pack with the Traxxas EZ-Peak 100W Dual Battery Charger with iD Auto Battery Identification, and two Power Cell 11.1V 5000mAh 25C 3S LiPo Batteries.

Features:

• #2972 Charger Charges 2S and 3S LiPo batteries 5-8 cell NiMH batteries                                      
• Traxxas's iD technology automatically configures and optimizes charge settings for Traxxas iD equipped batteries                         
• Charges two batteries simultaneously at up to 50W (4 amps) each, or charges single battery at 100W (8 amp) output in High-Output mode                                                               
• Charges a NiMH and LiPo at the same time                             
• Advanced Mode for full manual control of charger settings            
• Progress bar and audible alerts                                      
• Storage Mode prepares LiPo batteries for extended storage            
• 30 day limited warranty through Traxxas beginning at date of purchase

• #2872X Batteries 5000mAh 3S 25C LiPo Battery w/iD                                      
• 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

TRA2972 Charger Specifications:
AC Input: 100–240 Volts
Charge Current Range: 1.0-4.0A (Dual Mode) or 5.0-8.0A (High Output Mode) (100W Max.)
Discharge Current Range: 500mAh
Current Drain For Balance Ports: 500mAh
NiMH Battery Cell Count: 5–8 Cells
LiPo Cell Count: 2–3 Cells
Net Weight: 575g
Dimensions: 176x138x57mm

TRA2872X Battery Specifications:
Type: LiPo
Total Capacity: 5000
Voltage: 11.1
Continuous Discharge: 25C (125A)
Max Burst Rate: 50C (250A)
Watt Hours: 55.5
Charge Rate: 1C (5A)
Max Charge Rate: 2C (10A)
Dimensions: 155x26x44mm
Weight: 13.3oz (376g)

Includes:

(1) TRA2972: Dual iD Battery Charger

(2) TRA2872X: 5000mAh 3S 25C LiPo Battery w/iD