bro you are wrong. Might be you bought the fake battery.
Volta battery is too good, exide is use less and AGS is also good.
I also have homage ups with volta battery 175 amp and now this volta battery with us from last 4 years. Just top up the water in battery that's it. No problem at all and battery cell till now is just like brand new and back up is also good.
I maintained the battery and due to proper checking volta battery with us from last 4 years.