"We have 20+ T6x series Thinkpads in the office, and the lifespan of these batteries have been very good for us. Low failure rate. Reliable. Good life span. Also easy to get replacements from L."... (read full reviews)
"the battery is very poor life, 3.0 hours max. yes, it is charged quickly. According to Lenovo estmate it should stay at least 6-8 hours.
I like my machine performance and reliability but disappointed"... (read full reviews)