The ThinkPad Battery 25 (4 cell), ThinkPad Battery 25+ (6 cell), ThinkPad Battery 25++ (9 cell) are rechargeable batteries that use Lithium-Ion technology. They can be used as a replacement for aging system batteries or as a convenient spare battery.

The ThinkPad Battery 25 (4 cell) (51J0498) features:

• Lithium-Ion (Li-Ion) technology
• Four-cell, rechargeable system battery
• Battery Energy: 32 Wh (Watt Hours)
• Meets standard system battery specifications
• Over-discharge protection
• Compatible with the ThinkPad External Battery Charger
• Previously name as: ThinkPad SL410/510 4 cell Li-Ion Battery

The ThinkPad Battery 25+ (6 cell) (51J0499) features:

• Lithium-Ion (Li-Ion) technology
• Six-cell, rechargeable system battery
• Battery Energy: 57 Wh (Watt Hours)
• Meets standard system battery specifications
• Over-discharge protection
• Compatible with the ThinkPad External Battery Charger
• Previously name as: ThinkPad SL410/510 6 cell Li-Ion Battery

The ThinkPad Battery 25++ (9 cell) (51J0500) features:

• Lithium-Ion (Li-Ion) technology
• Nine-cell, rechargeable system battery
• Battery Energy: 94 Wh (Watt Hours)
• Meets standard system battery specifications
• Over-discharge protection
• Compatible with the ThinkPad External Battery Charger
• Previously name as: ThinkPad SL410/510 9 cell Li-Ion Battery

ThinkPad Battery 25 (4 cell) (51J0498):

• Approximate height: 20 mm (0.8 in)
• Approximate width: 207 mm (8.2 in)
• Approximate depth: 56 mm (2.2 in)
• Weight: 0.24 kg (0.53 lb)

ThinkPad Battery 25+ (6 cell) (51J0499):

• Approximate height: 20 mm (0.8 in)
• Approximate width: 207 mm (8.2 in)
• Approximate depth: 56 mm (2.2 in)
• Weight: 0.34 kg (0.75 lb)

ThinkPad Battery 25++ (9 cell) (51J0500):

• Approximate height: 21 mm (0.8 in)
• Approximate width: 218 mm (8.6 in)
• Approximate depth: 78 mm (3.1 in)
• Weight: 0.50 kg (1.10 lb)

ThinkPad Battery 25 (4 cell) (51J0498) packaged in a carton:

• Approximate height: 48 mm (1.9 in)
• Approximate width: 295 mm (11.6 in)
• Approximate depth: 132 mm (5.2 in)
• Weight: 0.37 kg (0.81 lb)

ThinkPad Battery 25+ (6 cell) (51J0499) packaged in a carton:

• Approximate height: 48 mm (1.9 in)
• Approximate width: 295 mm (11.6 in)
• Approximate depth: 132 mm (5.2 in)
• Weight: 0.47 kg (0.88 lb)

ThinkPad Battery 25++ (9 cell) (51J0500) packaged in a carton:

• Approximate height: 48 mm (1.9 in)
• Approximate width: 295 mm (11.6 in)
• Approximate depth: 132 mm (5.2 in)
• Weight: 0.63 kg (1.38 lb)

• 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 Replacement Unit (CRU) Service

• Announce date: 22 Oct 2009 (Worldwide)
• Planned availability date: 22 Oct 2009 (Worldwide)

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