I am new here.
I have a question regarding my ups battery backup time. i have:
1 LOcal made ups of 1200watts
1 Ags 200ah 12v battery (3-4 months old)
my load is 400Watts (constant load)
Now my question is how much hours of backup I can get from my setup. Is there any formula. plz explain theoretically and practically.
Your reply will be highly appreciated.