I have used this V Guard inverter in my shop and I am going to share my personal views on this inverter.
I bought this inverter some months ago for my personal computer because in our area there is more current shortage. I bought it from a local electronic shop and they provided with warranty service too. Initially it was working good without any problems but slowly many problems started coming.
This inverter gives a very bad battery backup. It is supposed to give atleast 5-6 hours on a full charge condition which it was giving when it was new but slowly the battery capacity of the inverter decreased. After somedays it was only giving about hardly 2-3 hours of backup but now it is only giving half an hour after that it just switches off.
The inverter is much user friendly because it is easy to understand and operate on it. It just have a power button and wires to connect with the mains power supply.
The durability is good because the material used is firm and stable. But overall the inverter does not runs for much time. I contacted the shop for service, they repaired and gave but again it is working same as before.