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Amazon.com: Fully New 81+ Replacement Battery Compatible with Lenovo ThinkPad T420i T420s T430s 0A36287 42T4844 42T4845 42T4846 42T4847 45N1036 45N1037 45N1038 45N1039 45N1064 45N1065 45N1143-11.1V 44Wh : Electronics
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Lenovo ThinkPad laptops: Online backlash over the removal of external battery options - NotebookCheck.net News
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