Sumit74
Discoverer
it's a single circuit I think as I saw a transformer and capacitors onboard.have not used zebronics UPS. Does it have analogue circulatory ( you can see diode, capacitors, etc) or just a single circuit ( a circuit and the transformer) ?
will go to the shop tomorrow and try to return the batteries.
and buy new ups for peace of mind.
thanks for your suggestion.