AoA,
I also recently got the battery replaced. I opted for maintenance free battery, that I got from I & T Centre G-10 (Butt Battery), and it cost three times the regular battery. Hopefully it will last for twice the time a regular battery can do. Two years back, I got volta DIN 55 low maintenance (not maintenance free) battery from Melody Market for Rs.9500. I recommend that you should contact Volta for arrangement of such battery.
Head Office
House # 2, Street # 63, Sector F-8/4, Islamabad, Pakistan
Tel: +92-51-11122-00-22
Fax: +92-51-2855164
Rawalpidi Office
[SIZE=2][FONT=arial]Opp: Skans College, Saadi Road, Saddar Cantt Rawalpindi, Pakistan.
Tel: 051-5522802-3
Fax: 051-5514935[/FONT][/SIZE]