Last one year my friend continuously having problem with his Zebronics UPS.
It does not start automaticly.
Weak battery. An inverter trips every time and every time we have to reset it.
It has very shortened backup time.therefore Battery has loosed electrolytes.
A lot of times a alarm of inverter start beeping up countineously. Cooling fan stucks automaticly due to which it gets heat and alarm start.
Due to low backup having invertor does not work.
Bad invertor, power problems, auto stops fan, heat. Not valu for money.