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Thinkpad Battery 44++ (9 Cell) | Lenovo US
ThinkPad Battery 44 (4 cell), ThinkPad Battery 44+ (6 cell) and ThinkPad Battery 44++ (9 cell) - Overview - Lenovo Support IL
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Lenovo ThinkPad 44++ battery for X230 X230i (9 cell) 7800 mAh
9Cell 44+ Battery for Lenovo ThinkPad X220 X220i X220s X230 X230i 42T4861 New | eBay