Compatible Laptop Models:

HP Compaq 621 Series, HP ProBook 4520s Series,Hp ProBook 4320 Series, Hp ProBook 4320s Series, Hp ProBook 4321 Series, Hp ProBook 4325s Series, Hp ProBook 4320t Series, Hp ProBook 4420s Series, Hp ProBook 4425s Series, Hp ProBook 4321s Series, Hp ProBook 4520 Series, Hp ProBook 4520s Series, Hp Compaq 320, Hp Compaq 321, Hp Compaq 420, Hp Compaq 421, Hp Compaq 620, Hp Compaq 621

Original Part Nos:

587706-121, 587706-131, 587706-221, 587706-241, 587706-251, 587706-421, 587706-541, 587706-741, 587706-751, 587706-761, 592909-221, 592909-241, 592909-421, 592909-721, 592909-741, 593572-001, 593573-001, 6BJXK01RWZBKDG, BQ350AA, BQ350AAABA, BQ350AAAC3, HSTNN-CB1A, HSTNN-CB1B, HSTNN-CBOX, HSTNN-DB1A, HSTNN-DB1B, HSTNN-I85C, HSTNN-I85C-3, HSTNN-I85C-4, HSTNN-I85C-5, HSTNN-I86C, HSTNN-I86C-3, HSTNN-I86C-4, HSTNN-I86C-5, HSTNN-IB1A, HSTNN-LB1A, HSTNN-Q78C, HSTNN-Q78C-3, HSTNN-Q78C-4, HSTNN-Q81C, HSTNN-Q81C-3, HSTNN-Q81C-4, HSTNN-UB1A, HSTNN-W79C-5, HSTNN-W80C, HSTNN-XB1A, HSTNN-XB1B, PH06, PH06047, PH06047-CL, PH09, PH09093, PH09093-CL

HP 4320s Laptop Batteries User Tips:

1.How to charge your new replacement laptop battery?Brand New HP 4320s Battery batteries come in a charged condition. It is recommended that you fully charge the battery for 8 hours and never discharge your new battery to zero percent. Do not ignore the low battery notification. Immediately connect your charger and recharge the battery. The consequences of the battery running down to zero percent is that you will not be able to recharge the battery.

2. How to Extend the Life of Your Laptop BatteryStatistically, a typical laptop battery lasts for 500 charge / discharge cycles. If you want your laptop battery to last longer than normal, remove the battery once your laptop is plugged into a power outlet. If you leave it in, the AC power could cause the battery to overheat and overcharge. Also, Please reduce the laptop LCD’s brightness level – Set the screen brightness to lowest level satisfying your needs.

3. How to deal with my HP ProBook 4320s Battery laptop battery when it is not used?Don’t leave your 4320s battery inactive for extended periods of time. The battery should be re-installed every 3-4 weeks and be allowed to discharge to 30%. Thereafter fully charge the battery. Leaving a battery in storage for longer than this without using it could cause the battery to fully discharge as the circuitry of the HP 4320s Battery itself consumes power.