Why do I need a battery?

The battery can keep your computer still working when the power is off， the high capacity battery can be used even longer.

How to order battery?

The best way to find the battery you need is searching by the original battery code， and compare the picture of the battery， check the interface
 
Use "Ctrl+F" to search the key words from the website
if you still can not make sure the battery， please contact us.
 
For the shipment， we will provide the tracking number and the shipping method.
 
Please take care your battery， the recharge cycle is based on how you use the battery， don't overcharge， don't keep the battery in the wet environment， and please don't put water on the battery. Thank you 
 
Most of the high capacity battery (7800mAh， 10400mAh) will have some convex， see the pictures below .
  highcapcity

 

We have 2 kinds of replacement laptop batteries which are compatible with your   4321S. They are in different capacity. The battery is not only compatible with your  4321S， but also compatible with some other laptop models (notebook models) and battery part numbers. Please click the image to see the details of replacement  4321S laptop battery.

 

ImageTypeVoltageCapacityColorPrice
Li-ion10.8V5200mAhBlack 
Li-ion10.8V7800mAhBlack 
 
This replacement laptop battery does Not apply ProBook 4720s

This  battery is compatible with following part numbers:
For HP
  • 587706-751
  • 587706-761
  • 593572-001
  • 593573-001
  • BQ350AA
  • HSTNN-CB1A
  • HSTNN-CBOX
  • HSTNN-DB1A
  • HSTNN-Q78C
  • HSTNN-Q78C-3
  • HSTNN-Q78C-4
  • HSTNN-Q81C
  • HSTNN-UB1A
  • PH09
  • PH06
For  COMPAQ
  • 587706-761
  • HSTNN-CB1A
  • HSTNN-CBOX
  • HSTNN-DB1A
  • HSTNN-I85C-3
  • HSTNN-I85C-4
  • HSTNN-I85C-5
  • HSTNN-I86C-3
  • HSTNN-I86C-4
  • HSTNN-I86C-5
  • HSTNN-IB1A
  • HSTNN-LB1A
  • HSTNN-Q78C
  • HSTNN-Q78C-4
  • HSTNN-Q81C
  • HSTNN-Q81C-3
  • HSTNN-Q81C-4
  • HSTNN-UB1A
  • HSTNN-W79C-5
  • HSTNN-W79C-7
  • HSTNN-W80C
This   battery is compatible with following models:
For COMPAQ