Review on Lenovo ThinkPad X1 Carbon 5Th Gen 2017 6Th Gen 2018 Battery Replacement 11.52V 57Wh 4950MAh - 01AV430 SB10K97587, 01AV431 SB10K97588, 01AV494 SB10K97586 &01AV429 SB10K97586 by David Strawn

The battery showed up with a manufacture date 13 months ago with 55% charge. The instructions clearly state that you shouldn't store it for extended periods of time under 80% charge or you could damage it.After cycling the battery a few time (per the instructions) It would only charge to 47Wh of the 56Wh design capacity. Which was disappointing for a battery that advertises 57Wh (only 83%).I performed a battery gauge reset, and that got the full charge capacity up to almost 49Wh. Still not 57, but 86% is better than 83%.Of the limited range, the battery does perform as expected, and it fit fine. This is why I was generous with the two stars.