lenovo thinkpad p71 type 20HK read description. The laptop works but there is an issue with power delivery. First, note that there is no storage aka a hard drive in it.

The issue with power delivery is, it can only maintain a charge while it is off or asleep. To test it, I installed an NVME SSD and installed windows, surfed the web and everything. However, even with the largest power adapter designated for this model, it will not maintain charge while on, it will only charge when off or asleep. (Remember, there is no storage. I removed the SSD after testing)

135W lenovo charger included.