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Hi all

I have installed a 10kw grid tie system having 2 Mecer Axpert 5kw inverters and two banks of four 120Amphour omnipower batteries March this year. This system gives me about 30min on batery power. I am not sure if my settings on the inverters are correct for charging and depleting bateries. It is set to switch to bateries on 54V and back to utility on 42V i am guessing there are too many cycles per night.

I know the batteries are on the low side for the system. 

Any recommendations on what size batteries should i go for, how many?

And then secondly what is the best settings to prolong battery life?

I use about 60kw of electricity per day

Thank you in advance


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