In order to allow the fastest charging rates, the adapter cable features a resistor value which tells the attached Lenovo laptop it can draw up to 90 W. The battery pack in question could only ...
Unplug the power cable from your laptop ... and you should see that your laptop is plugged in and charging. By reinstalling my Lenovo laptop's battery drivers and disconnecting its battery ...
For example, [Berry Berry Sneaky] has recently put together a step-by-step guide on swapping the common ThinkPad rectangular charging port (also used on ThinkBooks and other Lenovo machines ...