On 3/16/2019 3:58 PM, Martin wrote:
I have a Thinkpad W540 and tried using one of the mobile 19V supplies - the same voltage as the Lenovo factory power supply. When I booted I got a new screen I'd never seen before. Lenovo was telling me to go out and buy a genuine Lenovo power supply. I haven't looked further but I guess they are using some signal riding on the 19 V to do this.
Equipment using lithium batteries requires a battery charger with regulation designed for the specific battery type. My guess is that the computer is sensing for that characteristic.
73, Jim K9YC _______________________________________________ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
