Renault Megane charged battery and no electrics working

Should not have ignored the warning lights . Checked battery voltage after charging ? Check battery terminals and earths . If you get it running and warning lights on , scan it for codes .

I didn't ignore the warning lights, they all came up at once along with it not starting. Upon checking the manual the only suggestion was the battery so I charged it and thereafter there was zilch, Nothing at all alive.

I had not done so before writing this but decided to check the battery with a multimeter and it read 0.3 volts so that was the problem. I had a new battery fitted yesterday and it is fine. Now I just need to get the radio code to get it working again.

Thanks very much for your response.

This should help with the radio code ,

https://keycardservices.co.uk/radio-codes/

and then check the pre code from list .

https://github.com/Joyez/renault-radio-code-list

Thanks muchly. It is public holiday here so was having to wait to get hold of Renault dealer.