My friend gave me 3 Lenovo Thinkpads and 3 PSU cables and I'm trying to match them up. In particular, the most powerful laptop is a Thinkpad X1 Carbon. On the back it says it requires 20V,4.5A. However, the most powerful of the PSUs says its output is 20V,3.25A.
All of the three laptops and PSUs are physically compatible with each other, ie have the same shaped power plug/socket.
Is it generally ok to use a 3.25A PSU with a 4.5A laptop, if the voltage is the same?
Does the 4.5 mean that is the maximum current it might need?
Will it tend to run slowly as a result of using less current?
thanks,
EDIT - in the comments below this question is referred to: Laptop power supplies, does current matter?
That's kind of different to my situation because in that other question the current difference is larger (8A v 5A, compared to 4.5A v 3.25A in my case).
EDIT 2 - what's pushing me towards thinking it's ok is that this item on amazon https://www.amazon.co.uk/Lenovo-ThinkPad-Genuine-Adapter-Charger/dp/B00HW05MK4, which claims to be a Thinkpad X1 Carbon Charger, seems to be identical to the 3.25A charger that I have.
