This is a rectangular 8 cell Tx battery case with a 9V connector molded in one end. It fits radios such as the 3PB (if you're not using NiCds). This will also work on the 2P, 2PKA. Specs: Approx dimensions- Length 4.25 Width 1.25 Depth 1.25 updated NMH 2-4-93 updated jpg 6/17/13