This is the GWS 6-cell 500mAh NiMH Battery. FEATURES: Flat pack (side-by-side)shrink-wrapped & pre-assembled with red 2-pin connector (GPMM3106) Also known as a JST plug Used in park flyer model airplanes SPECS: Cell Size: AAA Length: 2-3/8" (61mm) Length of lead: 2" (50mm) Width: 1-7/8" (45mm) Height: 3/8" (10mm) Weight: 2.82oz (80g)