First to cover: The Laptop doesn't have the original charger, it's a generic one manufactured by Logik The Laptop model is Sony VAIO VGN-NR38M The Laptop's battery is the original battery The Problem: In simple terms, I think the battery is broken, Vista reports 'No battery is detected', even with the battery plugged in as soon as I remove the charger the Laptop instantly shuts off, and because I can't even get Vista to detect the battery I can't run any sort of diagnostic tools to see if it's holding any charge at all. Is there a good way to test the battery externally? As I refuse to buy a new one until I'm sure it's the problem. I have already carefully dismantled the Laptop and checked the contact pins on the motherboard and they're fine, I've also checked the A/C charging port to motherboard connector and that's also fine. Thanks, Dave.