I bought this microteck inverter along with v guard battery few months earlier, till now I have experienced no problems.
this inverter is having led display for various indicators like power on, on battery, overload etc.
warranty is of 3 years and service is also good . I can say this because after one month use I noticed that my inverter is always on battery even when the power supply is on.
I called customer care and within 2 days a technical support came and after inspection told that there is no issue with the inverter actually the inverter was set on narrow voltage input and due to voltage fluctuatons the inverter was going on battery.
he changed the inverter on wide input voltage and since then its working fine.
actually there are 2 small switches at the back pannel of inverter for input voltage control, most of inverters or ups have it.
narrow voltage input is for appliances like lcd, desktop computers etc which work on stable high input voltage and if ur inverter is set for narrow it will go on battery for stable supply.
so if there is frequent fluctuations in ur area its better to keep inverter on wide input voltage supply.
this can also be said to be one limitaion as its not fully automatic but in this price range its good.