07-13-2017 02:36 PM
I have several slim-tip power adapters for my 1st gen x1 yoga, please tell me there's a converter to the USB-C out there...
Do I have to replace all my adapters? Already looking at having to replace the dock. I miss the dock on my x200t...
I know, I'm old. Punch card old to be specific I'll have you know they just shut down the punch card classes at my high school when I got there, so I took electronics instead. So I'm a little newer than punch cards...
Solved! Go to Solution.
07-13-2017 03:36 PM - edited 07-13-2017 03:39 PM
I believe that there are no adapters or converters and I think it is unlikely there ever will be. The slim tip adapters was simply 20 volts between 2 contacts with a center signal pin that had a resistor connected to ground. The signal pin was used to give the maximum wattage. The USB-C adapter can put out 5v, 9v, 15v or 20v and there is a complicated negotiation that goes on between the laptop and the AC adapter. The same AC adapter can charge a 5V phone or a 20V laptop over the same USB-C connector. Without the negotiation, the laptop won't charge or run off of AC. My X1 Yoga gen2 adapter won't work with other (older) machines and the older adapters won't work with it, but it will charge my phone.
BTW, I have used punched cards.
07-14-2017 07:34 AM
I have only used Lenovo-branded adapters. I have read accounts that say that some Dell and Apple chargers work. Saying they all will work is probably too much. Manufacturers often have their own interpretation of the specs
09-04-2017 10:36 AM
SERIOUSLY? I have all these back up batterys for my overseas trips. Now none will work because of the USB-C power change? I have all Lenovo x1 yoga 1st Gen, now getting more of these Gen2 units. The traveling sales people use massive external batteries on the overseas trips that connect via the old slim tip.. There is no conversion? Please say its not so.
01-14-2018 04:16 AM
Those batteries and universal chargers typically come with various tips.
Finally, there's this Kickstarter https://elecjet.com/products/anywatt?variant=2101223194651 which is supposedly good for Lenovo chargers but this company is sketchy AF because they are selling a Magsafe connector which, in general, is not available and Apple has a tendency to shut them down.