THIS IS A BRAND NEW IBM ORIGINAL SEALED AND BOXED GENUINE PRODUCT. The ThinkPad Ultrabay 2000 Li-Ion Battery is a rechargeable battery which can be used in addition to your primary system battery; adding this battery to your system maximizes your "unplugged" usage time. - 9 cells Li-Ion - Output of 10.8V - can be recharged in 2.0 to 5.0 hours depending on the ThinkPad system usage.- Requires the...