Keep your x230t or x220t system powered for longer with the 6 cell thinkpad battery 67 compatible with the x220t and x230t systems this battery can be used as a replacement or as a convenient spare for additional power on the go on average the battery lasts for 66 watt hours and can be recharged the lithium ion technology ensures a safe flow of power and each battery is safeguarded against damage from incorrect voltage with over discharge protection however it is not compatible with the