tender for set of spares for ultrasonic flaw detector model ds - 322 of m/s. eec mumbai , one set consist of1 . rechargeable li-ion battery pack model bat 322l code no. vnf 10a03 . 2 battery charger cum mainsadapter input 110 - 260 vac 50-60 hz code vnf 9a014 . one set consist of two items.