So I am fairly prepped post sandy for another power loss.All I really care about is power for the pumps....and then the icebox.Everything else is a luxury I can live lean on.Gensets installed.However, I brought home three 2700VA UPS from work - rebuilt with fresh batteries.I was planning to use them use as big 'old battery, in that I would charge them every 3 months...and if I needed power, I could