L20M3PF0 SB11B36274 5B11B36279 5B11N52044. There are two battery models: 45Wh L20M3PF0 and 38Wh L20M2PF0. L20L3PF0 SB11B36276 5B11B36283 SB11N52039 5B11N52013. L20C3PF0 SB11N52037 5B11N52029 SB11B36277 5B11B36275.
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