We installed the Su-Kam pure sine inverter 5 years ago and everything worked really fine for the first 1 year and the inverter was giving a good battery backup of 10-12 hours even with the heavy usage and 2 tvs, 1 computer 10 bulbs which was impressive. The problem was not with the inverter but the batteries.
The batteries worked really well but with only a few months of usage it started giving less and less battery backup. Sometimes even just 6 hours. At first our thoghts were our usage but then it died after shortly 2 hours and when we called service they had to replace batteries that cost us 2500.
The same situation arised after 7 months and it was making a lot of noises and disturbing us while charging that issue also took 1500, and after every months or so we have to do repairs on it which was really not acceptable. We have done numerous repair and still it gives problem and even the company repair man don’t know how to fix it permanently and just cost us money everytime.
After such experience I dint think its an ideal machine for you and I can’t recommend it.