I believe this is the battery I ordered from amazon: http://www.amazon.com/Lenovo-ThinkPad-Ultrabay-Battery-0A36310/dp/B0085MPJ3S/ref=sr_1_2?ie=UTF8&qid=139510

I believe this is the battery I ordered from amazon: http://www.amazon.com/Lenovo-ThinkPad-Ultrabay-Battery-0A36310/dp/B0085MPJ3S/ref=sr_1_2?ie=UTF8&qid=1395100569&sr=8-2&keywords=t430s+battery http://www.amazon.com/Lenovo-ThinkPad-Ultrabay-Battery-0A363... It's about $25 more expensive directly from Lenovo: http://shop.lenovo.com/SEUILibrary/controller/e/web/LenovoPortal/en_US/catalog.workflow:item.detail?GroupID=460&Code=0A36310#overview http://shop.lenovo.com/SEUILibrary/controller/e/web/LenovoPo...