I've just purchased a new Dell 9 cell battery in replacement of the existing 6 cell battery. Both 11.1v
Once the new battery is inserted the laptop doesn't recognise the new 9 cell battery. In windows I get the message 'The battery installed in you Dell notebook is not recognised. Please insert an approved Dell battery.' And in bios updated to version 12 I get the message 'Health: Not a Dell Battery.'
Can anyone help?