The ThinkPad T400s Series 6 cell Li-Ion battery (51J0497) features:

• Lithium-Ion (Li-Ion) technology
• Six-cell, rechargeable system battery, 11.1 V dc, 3.9 Ah
• Standard system battery specifications
• Over-discharge protection

Performance specifications:

• Output voltage: 11.1 V dc (nominal)
• Battery Performance Amp-Hour: 3.9Ah
• Battery Performance Watt-Hour: 44 Wh

Physical specifications:

• Approximate height: 17.29 mm (0.68 in)
• Approximate width: 73.5 mm (2.89 in)
• Approximate depth: 262.07 mm (10.32 in)
• Weight: 312 g (0.69 lb)

Operating environment:

• Temperature: 5 deg to 35 deg C (41 deg to 95 deg F)
• Relative humidity: 8% to 95%
• Shock: 50cm free drop
• Vibration (Random RMS): 1.04 G (2 Hz to 200 Hz)

1 year – Customer Replaceable Unit (CRU)

• Announce date: 23 Jun 2009 (Worldwide)
• Planned availability date: 23 Jun 2009 (Worldwide)

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