Replacement Battery for HP ProBook 4520s Black,

Brand new 10.8V 5200mAh Genuine HP ProBook 4520s Li-ion battery . Each Battery of the HP ProBook 4520s laptop has been tested on the HP system before being dispatched to ensure the safety of your HP laptop.

Every Original HP laptop battery has passed through a series of rigorous safety tests and been certified by CE, UL, ROHS, ISO9001/9002. Generally speaking, this Genuine HP ProBook 4520s battery can be charged/discharged up to more than 600-800 cycles.

Thank you for purchasing this high quality HP ProBook 4520s laptop battery at hp-battery . Our batteries are packed in carton boxes with anti-static bags and anti-pressure sponge, in order to effectively protect the battery in shipping. We have a rigorous testing process to ensure that your orders (e.g. this battery for HP ProBook 4520s laptop) are perfectly functional before packaging and sending it to you. Before placing an order, please make sure that the part number of your old original HP ProBook 4520s battery is listed as below and has the same shape as our battery image (please view the larger images for details).

This is the Original HP ProBook 4520s Battery, You can extend the life of your laptop battery significantly through the proper care and handling of your battery.

• Any new HP ProBook 4520s battery should first be fully charged by leaving it plugged in overnight. Once a computer battery is fully charged it will no longer accept any more power. It is a common practice to leave laptops plugged in after they have been turned off so that the battery has a full charge the next time you use your laptop. It is probably fully charged within 5 hours.
• A brand new ProBook 4520s notebook battery is in a weakened condition since it has not been conditioned yet. Condition and break in your new battery by performing 5 partial discharge and recharge cycles the first week you receive your new battery.
• Run on battery power without the AC adapter cord at least once a week to keep the HP ProBook 4520s battery cells active and at their peak potential. When your laptop is plugged into the power adapter the battery goes to 'standby mode' while your laptop runs directly on electricity from the wall outlet.
• Even though your battery indicates it is fully charged, your battery will return to a weakened state again in a few months if it does not get some exercise through partial discharge and recharge cycles while running on battery power alone.
• If your ProBook 4520s battery has not been actively used 2 months or more, condition your battery again with 5 partial discharge & recharge cycles to increase the batteries capacity and run time.
• Don't run your battery all the way to empty. Your battery will have a longer service life if it receives shallow discharge and recharge cycles. Research has shown that the useful life of the battery will be much longer if you begin to recharge the battery any time before reaching 20% of the remaining power capacity. Recharging the HP ProBook 4520s battery even after 10 minutes will not reduce the battery's life span as lithium batteries do not have the memory effect which was found in older NiCad battery technology. NiCad batteries have never been used in laptops, even the earliest models.
• Never run your battery below the 2% critically low warning point. If your battery is run below this point it may not have enough energy to even recharge. This may effectively 'kill' your HP ProBook 4520s

• Fit Machine Models:

  • HP ProBook 4320
  • HP ProBook 4320s
  • HP ProBook 4321
  • HP ProBook 4321s
  • HP ProBook 4325s
  • HP ProBook 4326s
  • HP ProBook 4420s
  • HP ProBook 4421s
  • HP ProBook 4425s
  • HP ProBook 4520
  • HP ProBook 4520s
  • HP ProBook 4525s

  Compatible with numbers:

  • HP 587706-121
  • HP 587706-131
  • HP 587706-221
  • HP 587706-241
  • HP 587706-251
  • HP 587706-421
  • HP 587706-541
  • HP 587706-741
  • HP 587706-751
  • HP 587706-761
  • HP 592909-221
  • HP 592909-241
  • HP 592909-421
  • HP 592909-721
  • HP 592909-741
  • HP 593572-001
  • HP 593573-001
  • HP BQ350AA
  • HP BQ350AAABA
  • HP BQ350AAAC3
  • HP HSTNN-CB1A
  • HP HSTNN-CB1B
  • HP HSTNN-CBOX
  • HP HSTNN-DB1A
  • HP HSTNN-DB1B
  • HP HSTNN-I85C
  • HP HSTNN-I85C-3
  • HP HSTNN-I85C-4
  • HP HSTNN-I85C-5
  • HP HSTNN-I86C
  • HP HSTNN-I86C-3
  • HP HSTNN-I86C-4
  • HP HSTNN-I86C-5
  • HP HSTNN-IB1A
  • HP HSTNN-LB1A
  • HP HSTNN-LB1B
  • HP HSTNN-Q78C
  • HP HSTNN-Q78C-3
  • HP HSTNN-Q78C-4
  • HP HSTNN-Q81C
  • HP HSTNN-Q81C-3
  • HP HSTNN-Q81C-4
  • HP HSTNN-UB1A
  • HP HSTNN-W79C-5
  • HP HSTNN-W80C
  • HP HSTNN-XB1A
  • HP HSTNN-XB1B
  • HP PH06
  • HP PH06047
  • HP PH06047-CL
  • HP PH09