This is the Battery/charger completer pack (includes TRA2972 Dual iD® charger (1), TRA2869X 7600mAh 7.4V 2-cell 25C LiPo battery (2))

Charging Solved!
Simple. Fast. Just plug in a pair of Traxxas iD® batteries and press Start. Traxxas’ exclusive iD® technology eliminates complicated charger programming by automatically configuring and optimizing the charge settings for Traxxas iD batteries. The EZ-Peak® Dual charges two batteries simultaneously at up to 50 watts (4-amps) each, or switch to High-Output mode to charge a single battery at the maximum 100 watt (8-amps) output. Charging faster means more fun time behind the wheel. You can even charge a NiMH and a LiPo at the same time! The progress bar and audible alerts keep you informed while the advanced high resolution peak detection delivers a perfect charge every time. The EZ-Peak Dual’s Storage Mode protects your LiPo battery investment by safely preparing the batteries for extended storage.

Faster charging means you get to spend more time behind the wheel. The EZ-Peak Dual puts out a full 100 watts of power that equates to 8-amps of charging horsepower. It’s a twin turbo-equipped charger. Traxxas iD LiPos (4000mAh or higher) charge nearly 2x faster in High Output Mode. The EZ-Peak Dual isn’t just for iD LiPos; the Multi-Chemistry nature of the charger means LiPos and NiMHs can be charged at the same time. Advanced Mode opens the door for backwards compatibility. This allows EZ-Peak Dual to charge any Traxxas Power Cell battery equipped with a first-generation Traxxas High-Current Connectors and Traxxas iD batteries independently or simultaneously. There are two balance ports built into the charger for Traxxas LiPo batteries equipped with external balance leads. Take full advantage of the 8-amp output and experience the pinnacle of charger flexibility and power.

With iD® Auto-Battery Identification there’s no need to worry about the battery chemistry or capacity. EZ-Peak Dual identifies the type of battery and its capacity. EZ-Peak Dual also cuts down on wasted time by eliminating the hassle of programming and using complicated setups. Just plug an iD battery in and press Start. That’s it! Keeping with the simplicity and ease of use, the iD system eliminates fragile balance wires and clunky balance leads. The iD system streamlines the entire charging experience.

Features:
100-Watt output
Recognizes Traxxas iD® batteries to automatically program and optimize charger settings
Charge a NiMH and LiPo at the same time
Charge progress indicator
Optimized for faster LiPo balance charging
One button LiPo storage charge protects your battery investment
Advanced high-resolution peak detection delivers a perfect charge
Easy to use interface
Audible alerts
Built-in cooling fan
Advanced Mode for full manual control of charger settings
Legacy support for all Traxxas High-Current Connectors
Built-in balance ports for conventional LiPo batteries
Charges 5-8-cell NiMH batteries
Charges 2s and 3s LiPo batteries

TRA2869X Battery Specifications:
Type: LiPo
Total Capacity: 7600
Voltage: 7.4
Continuous Discharge: 25C (190A)
Max Burst Rate: 50C (380A)
Watt Hours: 56.24
Charge Rate: 1C (7.6A)
Max Charge Rate: 2C (15.2A)
Dimensions: 155x27x43mm
Weight: 13.8oz (390g)

Includes:
(1) TRA2972: Dual iD Battery Charger
(2) TRA2869X: 7600mAh 2S 25C LiPo Battery w/iD