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Charge bhi bohat retain kerti hai. I run my pc (u can see the specs in my profile for power consumption), 190W LCD, 120W LED and 3 fans and 4 tubelights on it. Runs absolutely flawlessly for up to 4 hours. Uskay baad charge gir jata hai. Is k ilawa jo ap keh rahay ho k battery drain hojati hai jaldi, overcharging reduces the total capacity of the cells in the battery. This in turn leads to less charge potential being held back by the battery. Deep cycle batteries are expensive but worth it. They are now labelled as UPS125 and UPS150 etc. Shopkeepers will say koi farq nai hai bus ups laga ker price barha di hai but there is a difference in performance. Its the deep cycle battery tht UPS100 UPS 120 UPS150 and so on.