After more than 7 charge cycles, I can say that the battery of GRS is the original absolutely equivalent. The technical data are anyway the same, and a difference in how long a battery charge is enough (although dependent on many factors) is not observed. The fit of the batteries for the rechargeable battery slot is not to criticize. I have not regretted the purchase and forgive good conscience perfect score.
Conclusion: Who has one of the "compatible ThinkPads" and for this a replacement or second battery searches, which can access here without hesitation. Strong buy recommendation!