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facelessloser on Twitter: "Not surprising but adding a 9 cell battery to my thinkpad x220 made it quite a bit heavier. Hope its better battery life then my old aging battery #ThinkPadX220 #
X220 with 9 cell battery is awesome. : r/thinkpad
Lenovo's X220 ThinkPad with '24 Hour' Battery | WIRED
Lenovo ThinkPad X220 Review
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Lenovo ThinkPad X220 Review
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Thinkpad Battery 44++ (9 Cell) | Lenovo US
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0A36307: Lenovo ThinkPad Battery 44++ (9 Cell) X230/X220 | Convena.com
Amazon.com: Lenovo ThinkPad 9 Cell Lithium Ion Battery 44++ ( Manufacturers P/N; 0A36307 ) 94Wh Extended Life System Battery For X220 And X230 Laptops Only : Electronics
Lenovo ThinkPad X220 really does get 20+ hours of battery life (sort of) - Liliputing
9 cell Battery for Thinkpad X230, X220, large energy storage - YouTube
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ThinkPad x220 Review - Editor's Choice Ultraportable w/ 15 Hour Battery
I put the Lenovo ThinkPad X220's 24-hour battery claim to the test | Windows Experience Blog
