Thank you, guys – I forgot to mention that Samsung offered to swap out the battery for me, but it would take 7 working days, and as I work for myself using that laptop, I struggle to find 7 working days when I can be without it 🙁
Therefore they sent me a replacement battery and said I could swap it myself… now I can picture them laughing their heads off!
I thought at first it would be as easy as the Apple Mac thingies where you can replace the built in battery yourself, but it’s a real pain to try and get the cover off this one 😕
As I’m not an expert, I doubt whether I would be able to reassemble any bits that I disconnect accidentally – might have to wait until I can spare the laptop for 7 days and just stay near a socket until then!