Up to 1/3 more capacity than the standard system battery to stay unplugged longer Can be used with ThinkPad Z60m and T60 Series notebooks Original equipment specifications for correct fit and capabilities And it's backed by a Warranty by Lenovo with renowned Service and Support available from IBM , Up to 1/3 more capacity than the standard system battery to stay unplugged longer Original equipment specifications for correct fit and capabilities And it's backed by a Warranty by Lenovo with renowned Service and Support available from IBM