Negotiable

                                            New HP ProBook 4435s 4436s 4440s 4441s 4445s 4540s Laptop Battery

    HP replacement computer battery
    10.8 Volts -same as 11.1 Volts
    5200 mAh or 57 Whr; Runs longer than 4400 mAh batteries
    6 Cell Li-ion
    Black
    06 Months Replacement Warranty
    300-500 recharge cycles

You can expect about 2 hours to 2-3 hours of run time with this computer battery when new, depending on your energy use.

This battery replaces the HP ProBook 4540s family of notebook computers.
Replaces these many HP laptop battery part numbers:

    633733-151
    633733-1A1
    633733-241
    633733-251
    633733-321
    633735-241
    633805-001
    633809-001
    650938-001
    HSTNN-DB2R
    HSTNN-DB2T
    HSTNN-DB3C


    HSTNN-GB2R
    HSTNN-I02C
    HSTNN-I97C-3
    HSTNN-I97C-4
    HSTNN-I98C-5
    HSTNN-I99C-3
    HSTNN-I99C-4
    HSTNN-IB2R
    HSTNN-IO2C
    HSTNN-OB2R
    HSTNN-OB2T
    HSTNN-Q87C-4


    HSTNN-Q87C-5
    HSTNN-Q88C-4
    HSTNN-Q88C-5
    HSTNN-Q89C
    HSTNN-Q99C-3
    HSTNN-Q99C-4
    HSTNN-XB2R
    HSTNN-XB2T
    HSTNN-XB3C
    LC32BA122
    PR06
    PR06047
    PR06055
    PR09
    PR09093
    QK646AA
    QK646UT


Laptop Battery Express only deals with brand new premium computer batteries. We never carry recycled or used batteries. We only use the highest quality cells inside the battery pack so you will have a long service life (300-500 recharge cycles). We do not use cheaper battery cells which can wear out in a little as 3 to 6 months. Our inventory turns rapidly and you will always receive a freshly manufactured battery.
How to care for your ProBook 4435s 4436s 4440s 4441s 4445s 4540s 4730s 4740s PR06 battery.

You can extend the life of your laptop battery significantly through the proper care and handling of your battery.

    Any new laptop 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 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 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 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 battery even after 10 minutes will not reduce t                                    

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