This is the GWS 6V (5-cell) 600mah NiCd Battery Pack with red JST Plug. FEATURES: AA 600mah Sanyo cells wrapped in yellow shrink wrap 2" 22 guage lead with male (GPMM3106) BEC connector SPECS: Length: 3.75" (70mm) Width: 2" (50mm) Thickness: .58" (14.8mm) Weight: 4oz (112g)