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High quality battery for HP ProBook 4421S - 4400mAh,6 cells

This brand new 4400mAh(6 cells) replacement HP ProBook 4421S battery is made with high quality cells from SANYO. Guaranteed to Meet or Exceed Original Specifications.

SKU :
USH36508-1
Condition :
Brand New, Replacement
Chemistry :
Li-ion
Color :
Black
Voltage :
10.8V
Cells :
6 cells
Capacity :
4400mAh
Size :
268.50x41.50x20.30mm

High quality battery for HP ProBook 4421S - 6600mAh,9 cells

This brand new 6600mAh(9 cells) replacement HP ProBook 4421S battery is made with high quality cells from SANYO. Guaranteed to Meet or Exceed Original Specifications. This is a high capacity battery, the bottom of this battery will extend out about 1 inch, bigger size.

SKU :
USH36508-2
Condition :
Brand New, Replacement
Chemistry :
Li-ion
Color :
Black
Voltage :
10.8V
Cells :
9 cells
Capacity :
6600mAh
Size :
268.50x41.50x37.5mm
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Note : 1. 10.8V and 11.1V are compatible, they are in common use. 2. The 7800mAh(9 Cells) battery will extend out about 1 inch from the bottom of the laptop, bigger size but lasting longer.
Choose one high quality replacement HP ProBook 4421S battery to enhance the performance of your laptop! Our brand new 4400mAh replacement HP ProBook 4421S battery are made with high quality cells from SANYO. All our replacement HP laptop batteries have passed international certification( CE, UL, ROHS, ISO9001/9002 etc.) and passed through strict safety testing, we guaranteed all batteries for HP ProBook 4421S are high performance, long-life and safety, 100% OEM compatible with the original specification( size etc.), no memory effect. Furthermore, our replacement HP ProBook 4421S batteries are produced by eco-friendly materials without lead or mercury.
Thank you order the high quality replacement HP ProBook 4421S battery at HPLaptopBattery.us, before placing an order please to make sure the model(or part number) of this ProBook 4421S battery can compatible for your HP laptop, you can compare your old battery to our product pictures. We will check every ProBook 4421S battery's functions one by one carefully before shipping them out to make sure every function works well,since we understand the annoyances of dealing with defective products.

Compatible Part Numbers

  • 633731-141
  • 633731-151
  • 633731-221
  • 633731-241
  • 633732-141
  • 633732-151
  • 633801-001
  • 633803-001
  • 660003-141
  • 660003-151
  • 660151-001
  • HSTNN-I96C
  • HSTNN-IB1U
  • HSTNN-IB2U
  • HSTNN-IB2V
  • HSTNN-IB3I
  • HSTNN-JN04
  • HSTNN-JN06
  • JN04
  • JN06
  • QK650AA#AB2
  • QK650AA
  • QK651AA

Fit Laptop Models

  • ProBook 4420S
  • ProBook 4421S
  • ProBook 4425S
  • ProBook 4421

Some tips for the replacement HP ProBook 4421S battery using

  1. Please charge 8-12 hours the brand new replacement HP ProBook 4421S battery for the first time use(Don't care about the "fully charged" tips after just 1-2 hours), normally require two to three charge/discharge cycles before achieving maximum capacity.
  2. Try to avoid frequent full battery discharges. Avoid heat, heat is the Li-ion battery's enemy.
  3. A charged replacement HP ProBook 4421S battery will eventually lose its charge if unused. It may therefore be necessary to recharge the battery after a storage period.
  4. If you don't plan on using your replacement HP ProBook 4421S battery for prolonged periods of time, you should remove it from the laptop and store it in an Anti-Static bag and in a dry, cool place. Make sure it keep 40 - 80% charge and highly recommended to charge it at least once a month. On the other hand, if the charge is too low, the battery can become permanently unusable, due to battery self discharge
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