Wow this post and today exactly after 8 months this Osaka ***** 175 ampere dumped me, bakcup was low after 7th month....only winter season covered well....Now I have purchased exide n140 AND FILLED WITH Pyro Chemicals prepared electrolyte. My experiments will never finish, well this is the fate of poor Pakistanis. Anyway took word of experts here and it is common impurities are definitely going to impact the electrolysis process. Hope Pyro produces pure electrolyte, who knows this is just bottled same desi acid crap? I took the pyro dealer Rehmat Khokar number from here and it got delivered at 786 motors shop in front of me. The shop is at A block market near Goga Chanay (bhook lag gai). So hoping now atleast battery will give me 1 year life. I have used AGS, Pheonix and Osaka, trying exide for the first time, no battery gave me more than 8 months life. I use a desi UPS 500W maybe that teen ka dabba has some problems, maybe changing UPS might increase life....