Hello, here I'm gonna share my personal experience about microtek. Actually, I bought my 1st microtek inverter in 2011. It works very good and no problem arises till now. The u.p.s. Still running smoothly without any issue but since then battery has to be changed 2 times. It took about 4-6 hours generally to change it completely and then it works for almost 3-4 hours continous even if I put television, 2 fans and 2-3 bulbs to run on the inverter. No issue has been arised and yeah I. Also use my desktop on the same inverter it also works fine. I hope it's worth your money to buy.