This is the Venom Power 20C 4000mAh 11.1V LiPo Battery with the Venom Universal Plug System.                                                                                                           FEATURES: For car usage Venom Universal Four Plug System allows connectivity between today's four most common battery plugs, Tamiya, Traxxas, Deans and EC3, simply attach desired plug to Venom plug on battery's wire leads Balance connector                                                                                                                                     INCLUDES: One Venom Power 20C 4000mAh 11.1V LiPo Battery with Tamiya, Traxxas, Deans and EC3 plugs                                                                                                                                 REQUIRES: A charger with balancing capabilities                                                                                                                 SPECS:    Length: 5.3" (136mm)                                                            Width:  1.8" (45mm)                                                             Height: 0.94" (24mm)                                                            Weight: 10.4oz (295g)                                                           Lead Wire Size: 12 AWG                                                          Lead Wire Length: 3.2" (82mm) approximate                                       Charge Rate: 4.0 Amps (1C)                                                      Discharge Rate: 80 Amps                                                         Max Volts Per Cell: 4.2V                                                        Max Pack Voltage: 12.6V                                                         Min. Discharge Volts: 9.0V                                                                                                                            COMMENTS: ALWAYS use a LiPo-approved charger                                              ALWAYS use a LiPo Cell Balancer                                                 NEVER Charge over 4.20V per cell                                                NEVER Charge at currents greater than 1C                                        NEVER Charge through the "To ESC or "DISCHARGE" lead                            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