2LP604374P4HHR: 7.4 volt 1600mAh rechargeable Lithium Polymer battery pack. New higher Output battery pack. Size: 74mm L x 43mm W x 12.0mm thick (2.91"L x 1.69"W x 0.472" thick). Weight: 80 gms. For Park Flyers & Slow Flyers, & RX use. Comes with Balance connector and JST Red connector. Other motor connectors available for additional $. Can be used as a Receiver Pack with a Voltage Regulator (sold separately), or as a Motor Battery.