This is the FlightPower FPRX series 2S 7.4V 4200mAh LiPo Receiver Battery.   
                                                                               
FEATURES: Most powerful cells and longest cycle life of any LiPo battery-      
            300+ cycles without noticeable drop in cell performance            
          Superior cell matching, and strict quality control backed by top-    
            notch support                                                      
          Cell tab connections are ultra-sonically welded for rock-solid       
            reliability                                                        
          Two year limited warranty beginning at date of purchase              
                                                                               
INCLUDES: FlightPower FPRX series 2S 7.4V 4200mAh LiPo Receiver Battery with   
            two Universal Connectors and JST XH Balancing Connector            
                                                                               
REQUIRES: LiPo compatible charger such as the Great Planes ElectrFly           
            TritonEQ, Triton2 EQ, and the TrakPower VR-1                       
          LiPo charging sack                                                   
                                                                               
SPECS:    Dimensions: 4.25 x 1.34 x 1.18" (108 x 34 x 30mm)                    
          Weight: 8.40oz (238g)                                                
          Watt Hours: 32.0                                                     
          Maximum Charge Rate: 1C                                              
          Connectors: Universal