Swap out your optical drive with a second battery to increase your unplugged power supply. The ThinkPad Advanced Ultrabay Battery III fits neatly into the Ultrabay media bay of ThinkPad notebook Series, UltraBases. Achieve all day computing up to 8 hours or more when you use the ThinkPad Advanced Ultrabay Battery III along with a high-capacity system battery like the optional ThinkPad T/R 14W 9 Cell High Capacity Battery
|Output Voltage||10.8 V DC|
|Product Type||Notebook Battery|
|Product Compatibility||Lenovo ThinkPad X6 UltraBase Lenovo ThinkPad X6 Tablet Ultrabase Lenovo ThinkPad Notebook Series: T400 T400s T500 R400 R500 W500 T61 T60 Z61 Z60 R61 R60|
|Battery Technology||Lithium Polymer (Li-Polymer)|
|Battery Capacity||2900 mAh|
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