Stay unplugged longer with ThinkPad Batteries 73 (4 cell) and 73+ (6 cell). These rechargeable batteries use Lithium-Ion (Li-Ion) technology and can be used as a replacement for aging system batteries or as a convenient spare battery.

The ThinkPad Battery 73 (4 cell) (57Y4564) features:

• Lithium-Ion technology
• Lithium Polymer (Li-Polymer)
• Four-cell, rechargeable system battery
• Battery Performance watt-hours: 42Wh
• Over-discharge protection
• Compatible with ThinkPad External Battery Charger

The ThinkPad Battery 73+ (6 cell) (57Y4565) features:

• Lithium-Ion technology
• Lithium Polymer (Li-Polymer)
• Six-cell, rechargeable system battery
• Battery Performance watt-hours: 64Wh
• Over-discharge protection
• Compatible with ThinkPad External Battery Charger

• ThinkPad Battery 73 (4 cell) (57Y4564) :
  • Approximate height: 24 mm (0.9 in)
  • Approximate width: 290 mm (11.4 in)
  • Approximate depth: 58 mm (2.3 in)
  • Weight: 0.25 kg (0.6 lb)
   
• ThinkPad Battery 73 (4 cell) packaged in a carton:
  • Approximate height: 54 mm (2.1 in)
  • Approximate width: 343 mm (13.5 in)
  • Approximate depth: 150 mm (5.9 in)
  • Weight: 0.40 kg (0.9)
   
• ThinkPad Battery 73+ (6 cell) 57Y4565):
  • Approximate height: 29 mm (1.2 in)
  • Approximate width: 268 mm (10.6 in)
  • Approximate depth: 58 mm (2.3 in)
  • Weight: 0.35 kg (0.75 lb)
   
• ThinkPad Battery 73+ (6 cell) 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: 0.48 kg (1.0 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 Replaceable Unit (CRU)

• Announce date: 05 Jan 2010 (Worldwide)
• Availability date: 05 Jan 2010 (Worldwide)
• Effective withdrawal date:
  • ThinkPad Battery 73 (4 cell) (57Y4564): October 2011

Notes:

• Compatible with ThinkPad External Battery Charger
• For the latest updates on the compatible systems, please refer to the Accessories Compatibility Guide.  

• Battery
• Publications

• CE MARK
• UL/cUL
• ACA/C-Tick
• PSE
• KC