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Replace your old inverter battery and buy new battery from Luminous, Exide, Amaron, TafBull, Microtek, Su-kam you could get Cash back up to Rs. 2,400/- to Rs. 3000/-* Conditions apply. Cash back Value depends upon Battery Ah Rating, For 150 Ah - Rs. 4200/- to Rs, 3000 For 135 Ah - Rs, 1800/- and for 100 Ah - Rs, 1200/-, The Cash back amount will be paid to you at the time of picking up old battery