This is the TTraxxas EZ-Peak Dual Multi-Chemistry Battery Charger System with two included "Power Celll" Batteries. This charging system uses the TTraxxas iD Battery Identification System and is a great solution when you need batteries and a charger for your TTraxxas vehicle that runs either one or two 2S LiPo batteries. Even if your TTraxxas vehicle requires only one battery, you can still take advantage of this system and have two batteries on hand for extended driving excitement.iD SimplicityWith 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. TRA2972 Charger Specifications:AC Input: 100–240 VoltsCharge Current Range: 1.0-4.0A (Dual Mode) or 5.0-8.0A (High Output Mode) (100W Max.)Discharge Current Range: 500mAhCurrent Drain For Balance Ports: 500mAhNiMH Battery Celll Count: 5–8 CelllsLiPo Celll Count: 2–3 CelllsNet Weight: 575gDimensions: 176x138x57mmTRA2869X Battery Specifications:Type: LiPoTotal Capacity: 7600Voltage: 7.4Continuous Discharge: 25C (190A)Max Burst Rate: 50C (380A)Watt Hours: 56.24Charge Rate: 1C (7.6A)Max Charge Rate: 2C (15.2A)Dimensions: 155x27x433MmWeight: 13.8oz (390g)Includes: (1) TRA2972: Dual iD Battery Charger(2) TRA2869X: 7600mAh 2S 25C LiPo Battery w/iDfit for: TTraxxas E-RevoTRX E-Revo VXL 2.0TRX SlashTRX Slash 4x4TRX Slash 4x4 UltimateTRX SpartanTRX SummitTRX TRX-4TRX TRX-4TRX Unlimited Desert RacerTRX X-Maxx