This is the Traxxas Power Cell 4S 14.8V 6700mAh LiPo Battery with the iD Connector.                                                                                                                FEATURES: Sized for the Traxxas X-Maxx monster truck                                      Hard-wired 12-gauge Maxx Cable soldered to cells                                iD Auto Battery Identification allows Traxxas iD equipped chargers to automatically set and optimize charge settings for specific battery           Center wire exit for guaranteed proper fit                                                                                                            INCLUDES: Traxxas Power Cell 4S 14.8V 6700mAh LiPo Battery with iD Connector                                                                                    REQUIRES: iD equipped LiPo compatible charger such as the Traxxas #2972                            EZ-Peak Plus 8 Amp Dual Battery Charger, TRAP2972                                      LiPo charging bag                                                                                                                                     SPECS:    Configuration: 4S1P                                                             Continuous Discharge: 25C                                                       Max Burst Rate: 50C                                                             Voltage Output: 14.8V                                                           Dimensions:                                                                     Weight:                                                                                                                                               COMMENTS: ALWAYS use a LiPo-approved Charger/Balancer                                     NEVER Charge over 4.20V per cell                                                NEVER Charge at currents greater than 3C                                        NEVER Trickle Charge                                                            NEVER allow to Discharge below 2.5V per cell                                    NEVER disassemble or modify pack wiring in any way or puncture cells            NEVER place on combustible materials or leave unattended during charging                                                                      ALWAYS Charge in a fireproof location                                           ALWAYS set charger's output volts to match battery volts                        ALWAYS keep out of reach of children