I started using the su kam falcon 1100 12v pure sine wave inverter in before 4 months.
In first month it is worked so good.And then I feel like its back up reduced.after I seen its not charging some times.And it dont give the actual indication about battery ( if the battery is charged fully it shows low battery) .so I informed to the service centre.And they solved the problem.
we started using again.After 2 days it makes some noise.it is a worst product I ever used.the product not gives the value for money
So dont buy it