01AV445 01AV446 01AV447 01AV448 L17L3P51 L17M3P51 L17M3P52 L17C3P51. Battery type: 01AV445 L17L3P1 Li-ion Battery. ThinkPad E480 series - Type 20KQ, 20KN. ThinkPad E580 series - Type 20KS. ThinkPad E490 series - Type 20N8, 20N9.
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