Hi, i have Hp Envy 17 1100ew on the original battery runs 20minutes , for replacement battery when laptop turn on voltage drops from 10 to 8,4V and laptop turns off before it enters the system, on the power supply is operating normally. Tensions on the inverter PU1 (OZ8681) are correct.
I do not know where to look for the problem any ideas?

в биосе серийник отобразился новой батареи или остался старой?

one battery is the original one battery is new (replacement) but does not work with this laptop on it I am not able to enter the BIOS, on the original battery work but quickly it discharges