Wish this thing had better battery life : r/thinkpad
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Thinkpad Battery 44++ (9 Cell) | Lenovo US
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Lenovo ThinkPad 44++ battery for X230 X230i (9 cell) 7800 mAh
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Review: Lenovo ThinkPad X230 | WIRED
Retro-Review of Used Lenovo ThinkPad X230 Sourced from eBay – Dynamic Subspace