Asalam o alaikum
Guys i have a APC 1500VA & a pair of Narada Acme G 100ah Gel Batteries. I'm Using them for over a year & they absolutely work fine with a load of around 600watts, and the minium backup was 5 hours plus! A week ago, when electricity was off, the UPS showed complete 5 bars of battery which means the batteries were fully charged but after 50 minutes of backup, UPS showed there is only 1 bar left for battery! I discussed the matter with my UPS dealer, who is a kind fellow and always gave an honest advice to check the batteries! I got them Checked, and the technician told me that there is a weak cell in one of the batteries. That's y, the backup time has been reduced to an hour or maximum 2 hours!
My Question is What should i do now? Can a dry battery cell can be repaired!