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UNISYS 11J8639 Laptop Battery

UNISYS 11J8639 Laptop Battery - Brand New, Three Years Warranty. UNISYS 11J8639 laptop batteries that are manufactured to meet or exceed the specifications of the original brand manufacturer. Fast Shipping, and Secure Online Ordering Guaranteed!

UNISYS  Ni-MH Battery Pack
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Original Price: US $ 90.84

Special price: US $ 39.14
Special Offer up to 60% Off
Brand New, 'A' grade cells, Three Years Warranty!
Laptop Battery Resource Center (User's Manual)

Product Details
  • 10.8V 4000mAh Ni-MH Laptop Battery (black)
  • Product Dimensions: 215.00x57.40x21.55mm
  • Product Type: Replacement Battery (Brand New)
  • Highest quality Japanese battery cells
  • 100% original manufacturer compatible
  • Three years warranty
  • Guaranteed to meet or exceed original specifications

This Laptop Battery can replace the following part numbers:
  BTP-W31,   60.46914.051,   BTP-X31,
  11J8639,   11J8604,   IB310,
  11J8645,    ASM11J8645,  
  11J8639,   BTP-X31,   60.46914.051,
  11J8604,    11J8645,   IB310,

This Laptop Battery is also compatible with the following models:
  Extensa 610CD,   Acer 310,   Acernote Light 370,
  Acernote Light 381,    Note Light 370,   Acer 610,
  Acernote Light 373,    370,   Extensa 610CDT,
  Acer 310e,    Acernote Light 370pc,   Acernote Light 384,
  Extensa 610,    Acernote Lifenote 373,   Acernote 374,
  Acernote Light 380,    Note 370 series,   Acer 315e,
  Acernote Light 372,    Extensa 616cdt,   315,
  Extensa 610CDP,    Acer 310d,   Acernote Light 370p,
  Acernote Light 383,    Extensa 616,   Note Light 380,
  Acer 610cd,    Acernote Light 373+,   380,
  Acer 315,    Acernote Light 371,   Extensa 616cds,

  Thinkpad 315,   ThinkPad TP315,   Thinkpad 310,
  Thinkpad 315e,    Thinkpad 310e,   ThinkPad TP310,
  Thinkpad 315d,    Thinkpad 310d,   ThinkPad 310ED,

  Instruments Extensa 610cdt,   Instruments Extensa 616cdt,   Instruments Extensa 610cd,
  Instruments Extensa 610 Series,    Instruments Extensa 616cds,   Instruments Extensa 610,

  Aquanta 370pc,
Choosing the right Charger / AC adapter:Before you buy any AC laptop adapter, please make sure the AC laptop adapter will give you the correct voltage and suitable current output.
See our tips for Extending Your Laptops Battery Life

How to maximize and battery performance?

It is recommended to condition (fully charge and discharge) tde new battery few times to allow it to reach its maximum rated capacity.
Condition tde Ni-MH and Nicd battery at least once a montd. It will reduce tde memory effect.
Use tde battery at least once a montd even it was kept in a dry and cool storage.
Clean tde metal connector (tde contact to tde notebook, usually in color of gold or silver) by alcohol or Electronics Cleaner Degreaser. It will maintain tde good conductivity,which improves tde power conduction from battery to Notebook.
Fully optimize tde Power Management features provided in system BIOS, and Operating System will also impove tde battery performance.Consult tde user's manual to fully understand tde usage of tdese features.

Is there any danger in leaving a laptop on 24 hours a day?

As long as it's in a well ventilated area, there's no danger. At least, no more danger than there would be if you left your desktop computer on all day. The danger to laptops is overheating. Because all the hardware is in such cramped quarters, it tends to get very hot. The bottom gets hot, so be careful where you put it. You may even want to put it on something raised so the air can get to the bottom. If you leave a laptop on blankets or a bed, it will often overheat because the insulation of the material is keeping the heat in. A tip that may help you when you're transporting your laptop is to take out the battery to ensure that you don't accidentally leave the laptop on.

Important note : Beware of refurbished Li-ion laptop batteries for bargain prices, due to the volatile nature of the Lithium Ion compounds, batteries must have matching cells and correctly calibrated control & safety electronics. All our new laptop batteries are made to the highest standards by quality manufacturers that also make original laptop batteries for many of the big brand names. Refurbished Li-ion laptop batteries are usually sold at highly discounted prices and thus are normally produced for the lowest possible price, often with little regard for thier long term stability, this can lead to them overheating or in extreme cases catching fire or exploding, this one area where quality should not be sacrificed for cheapness