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The battery on Vaio only lasts 30min, max , after a full charge.model vgn-sz1xp
less than year old
Hi supercharger and welcome.
That is far too short for your model - it should do several hours.
Try to borrow another battery to see if your Vaio has a fault or if the battery is faulty.
Your Vaio will be covered by warranty if it has a fault - but you battery will not be covered if it is over 6 months old.