I am a bit skeptical buying genuine new batteries for older thinkpads. Anyhow, got a new 6 cell FRU 45N1171 (Sanyo) for my x201/x200/x200s. I downloaded Lenovo Vantage for Win 10 which has the same battery management software that x201 uses on Win 7. Showed the new battery on cycle count of 1. I may pick up a few more batteries for my other x series thinkpads.