Laptop power adapter advice please

[ash59uk]

My power adapter for my sony vaio gave up the ghost and I am looking for a suitable replacement.

I require a VGP-AC19V28 19.5V 3.9A 3 pin cloverleaf and if I remember ohms law correctly works out at 75W.

The problem is I search for the above and get hits that are advertised as suitable but are rated at 4.7A 90W and many only have a 2 pin connector rather than a 3 pin cloverleaf.

Would getting the more powerful adapter cause damage to either my laptop or its battery?

Thanks in anticipation

 

[Tealc]

The laptop will only ever draw what it needs so you could have a 900W power supply and it would work just fine. Just make sure the voltage is close to the original ie within a volt. The 3 pin or 2 pin argument is immaterial to the laptop as it receives just a positive and a ground. The earth is just there for the outgoing power supply.