supply of battery 12 volt dc 8 ah lithium polymer (lipo) make :- tracer or make which issuitable for existing video modem model no. bp2544 or model which is suitable for existing video modem (1)dimension :- 80 x 153 x 38 mm (2) weight :- 600 gm, watt hour 96 wh (3) charging voltage 12.6 volt (4)maximum peak current :- 30 amp for video modem used in art/bsp.( battery connector). technicalspecification at annexure a.(attached).