5EP1600AE: 6.0 volt 1600mAh NiMH hump pack for RC cars and other RC models.  Includes universal Futaba-JR-SPEkTRUM-HiTEC-Z connector. These battery packs are MADE IN THE USA by BATTERIES AMERICA.  Pack dimensions: 2" x 1.25" x 1.125".  Fits in same space as a typical 4xAA square shape battery pack.  Weighs 4.2 ounces