X230 New Laptop battery for Lenovo ThinkPad 9 Cell Lithium Ion Battery 44++ 94Wh Extended Life System Battery For X220 And X230|Laptop Batteries| - AliExpress
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9-Cell lAPTOP 44++ Battery for IBM Lenovo ThinkPad X220i X230s 45N1028 0A36305 | eBay
ThinkPad バッテリー 44++ (9 セル) | Batteries | レノボ・ジャパン
Lenovo ThinkPad 44+ Li-Ion 63Wh 6-cell Battery for X230 (0A36306)