W540 i7 and 135W charger?

[mitabreV]

I have W540 with i7 and K1100 graphics. It was delivered with 170W charger. My question is, will it work with 135W charger as well?

[BillMorrow]

as long as the plugs are the same it probably will but won't charge as quickly..
try it and watch the charge rate in power manager..

welcome to the forum..

[automobus]

Unless newer firmware has different power requirement, for reliable stable operation, i7+K1100M requires 170W.

[mitabreV]

Looks like there is a problem if a computer is in dock, but maybe it works ok without a dock and external monitor. I will get my hands on a 135W charger and try.

BillMorrow: thanks!:)

[mitabreV]

Well I got my 135W charger attached to a dock and I got the screen flickering and mouse & keyboard disconnecting/connecting issue too. But it makes no sense at all, the computer was idling the whole time, so it couldn't possibly draw an amount of power that would need a 170W charger..

p.s. If I attach a 90W charger to the dock, there is no flickering, no mouse & keyboard problems, only difference to 170W is, that the computer is not charging.