Thinkpads Forum

I just purchased an Ultralight X60s a month ago. I'm very happy with the machine. I'm using it with an X6 Ultrabase at home and want to purchase an additional AC adapter. I'm just wondering if buying the higher powered adapter will decrease the charge time? I don't have a lot of stuff plugged into the USB ports in the X6, just a scanner and printer. Anybody have any ideas?

stuffinder wrote:I just purchased an Ultralight X60s a month ago. I'm very happy with the machine. I'm using it with an X6 Ultrabase at home and want to purchase an additional AC adapter. I'm just wondering if buying the higher powered adapter will decrease the charge time? I don't have a lot of stuff plugged into the USB ports in the X6, just a scanner and printer. Anybody have any ideas?

I don't see any noticeable difference using my spare (higher-powered) power supply, although I've never done exact measurements, and usually I am not charging all the way from 0% to 100% anyway.

I expect that the power circuitry on the laptop is designed to draw less current than the capacity of the standard power brick, and thus a larger brick won't really make a difference.

Thanks for the quick reply. I had the same thoughts, was just checking for others experiences.

I agree that the charge time is controlled by the computer and not limited by the adapter. If I check the Power Manager, I find that maximum charging power draw is well below 65 W. In any case, the lifetime of a Li ion battery decreases with higher charge rates. That is, the number of cycles is greater when charging as well as discharging is slower. Thus, very rapid charging is not desirable, though it might be necessary in an emergency

well, i am using 65w adapter

I'm pretty sure the only reason to purchase the 90w adapter, if you've got X60(s) is if you've got (or plan to get) other thinkpad models, and you want to be able to use a single adapter for both.

Lev

Both adapters work with the X laptops and with the X6 dock, and have no bearing on performance, but the 65 watt is smaller/lighter. However, the 90 watt is cheaper and, as lev mentioned, is compatible with the non-x 60-series laptops. Also, the 65 watt seems to be warmer to me.

No reason to not like the 60w adapter - it's 2/3 the size, and 2/3 the weight of the 90w adapter.

. . . . the 90w is cheaper? You can buy genuine IBM (Lenovo) 60w adapters here for $36. That's pretty cheap in my book.

http://keenzo.com/showproduct.asp?ref=FROOGLE&ID=686750

First Light wrote:No reason to not like the 60w adapter - it's 2/3 the size, and 2/3 the weight of the 90w adapter.

. . . . the 90w is cheaper? You can buy genuine IBM (Lenovo) 60w adapters here for $36. That's pretty cheap in my book.

http://keenzo.com/showproduct.asp?ref=FROOGLE&ID=686750

Has anyone tried the older 56W adapters (for X3/X4 series) with the X60 -- do they work, too?

tomh009 wrote:Has anyone tried the older 56W adapters (for X3/X4 series) with the X60 -- do they work, too?

No, they don't. Now I need to rebuild my collection of adapters...grr. I still have about eight old ones lying around.

RUSH2112 wrote:

tomh009 wrote:Has anyone tried the older 56W adapters (for X3/X4 series) with the X60 -- do they work, too?

No, they don't. Now I need to rebuild my collection of adapters...grr. I still have about eight old ones lying around.

Grrr indeed. Do they not work at all on the X60, or they do power it but not enough juice to charge the battery?

Can't be good to use the wrong wattage into the power supply of your laptop.
Doubt that the warranty would cover repairing the power supply in this case if needed.