dear i buy a 150-amh tubeler luminous battery in march 2011 after 4-5 month battery give only 3-4 hours backup i tell to shopkeeper about this. Ther were fault in ur line. I check but ever thing is ok. After two month its backup os only 2.5-3 hours . Give complain he take my battery. After this battery backup again 3-4hours. I complain again. The shop keeper say its backup is not increase. And company check all it. I can not help u. So pls help me to change this battery. Kailash 9307313377 Ratapur,Raebareli,u.p