Guys
Thanks for your quick response.
I am using HP NX 6325 laptop. The fault light is on inverter which I bought from ebay. I am using supercheap's 600 amp jump starter which has 12AH battery in it.
When I did test this morning, as soon as I connect laptop (or 10W bumb) the inverter stop and fault light goes red. It also discharge battery and show low voltage indicator on it. But after charging only 15 min, it show full charge. The jump starter workd absolutely perfect for 12V drive motor.
I also show 60W inverter in Aldi in this week, on its package it was written that you need minimum 20Ah battery for it.
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