Correct Battery for 2003 1.9TDI 130 SE BORA

Can anyone tell me what the correct (OEM) battery is for for my 2003 SE 130 TDI Tiptronic BORA?

I've had the car since it was 8 months old and have never changed the battery.

The one fitted is a VARTA 70Ah (1J0 915 105 AE). ....and unless it had been swapped in the first 8 months then it is 10 YEARS OLD !

It still works fine but maybe itwould be prudent to replace it?

Regards,
Mike

Not sure if it's a help but check out EuroCarparts if you're not fussed about getting OEM. A quick check on a Tdi 130 shows Bosch ones from around £65.
I replaced my battery with a higher rated one from them and it was way cheaper than ********* too. They'll deliver or hold it at your local store for you.
I've got no connection with EuroCarparts.