Dell L421X Battery 3rd Party Battery fix?

Hi Guys,

I have a dell L421X with a dead battery. Called up Dell and they said they didnt have stock for this battery anymore.

Thought to myself, I will just get a 3rd party battery and call it a day. The system boots but says that the battery cannot be identified. In windows it says plugged in , not charging. 63%.

As I understand it Dell deliberately denies 3rd party batteries from charging. But if they cannot even provide me a replacement, what choice do I have? Throw away a good laptop that is 5 years old?

Things I have tried:

Bios update to A16.
Remove battery and drain any remaining battery (20 Seconds on Power Button)
2 Different 3rd Party Batteries.
AC adapter is Original and is fine as per BIOS reading.

So having said all of this is there anyone that knows of a Fix for 3rd party Batteries?

Tried a vhbw battery and a "Genuine" Dell batteries from ebay.