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:
Charger: 
- Charges 2S and 3S LiPo batteries and 5-8 cell NiMH batteries
- Traxxass 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
Batteries: 
- 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
INCLUDES: 
- Traxxas EZ-Peak 100W Dual Battery Charger with AC Power Cord, Instructions, Cooling Fan
- Two Power Cell 11.1V 5000mAh 25C LiPo 3S Batteries with High-Current Connectors and Integrated Balance Plugs
SPECIFICATIONS:
Charger:
- Input Power: 100-240V/50-60Hz
- Output: 100W max
- Charge Current: 1-4A (dual mode), 5-8A (high output mode)
- Discharge Current Range: 500mA
- Current Drain for Balance Ports: 500mA
- Weight: 20.3oz (575g)
- Dimensions: 7 x 5.4 x 2.2" (176 x 138 x 57mm)
Batteries:
- Configuration: 3S1P
- Continuous Discharge: 25C (125A)
- Max Burst Rate: 50C (250A)
- Watt Hours: 55.5
- Charge Rate: 1C (5A)
- Max Charge Rate: 2C (10A)
- Dimensions: 6.1 x 1.02 x 1.7" (155 x 26 x 44mm)
- Weight: 13.3oz (376g)
Used with permission, copyright 2016 Traxxas/Tower Hobbies, Inc. Copyright 2016 Brey Corp. t/a Hobby Works