HP VI04 Laptop Battery for HP Envy 14 15 17 Pavilion 15 17 ProBook 440 445 450 455 Series HSTNN-DB6K HSTNN-LB6J 756479-421 756743-001 TPN-Q139 TPN-Q140

HP Laptop Battery for ProBook 440 G2, 445 G2, 450 G2, 455 G2, Envy 14-V000, 14-U000, 15-K000, 15-X000, 17-X000, 14T-U000, Pavilion 14 Series 14T-V000, 14-V001TU, 14-V001TX, 14-V002LA, 14-V002TU*Please double check your old battery against our pictures, mainly unique edges and connection points* Compatible Laptop BrandHPConditionBrand NewCell Number4 CellsCapacity2600 mAh/ 2200mAhOutput Voltage14.8V/14.4VColourBlackCell TechnologyLi-Ion BatteryWarranty1 Year from purchaseCompatible Part Number (Ctrl F)VI04  V104HSTNN-DB6K  HSTNN-DB6I  HSTNN-LB6J  HSTNN-LB6K 756479-421  756743-001 TPN-Q139  TPN-Q140  TPN-Q141  TPN-Q142  TPN-Q143  TPN-Q144 Compatible Model (Ctrl F)HP Envy 14 SeriesEnvy 14-v000 - v099Envy 14-u000 - u099HP Envy 15 SeriesEnvy 15-k000 - k099Envy 15-x000 - x099HP Envy 17 SeriesEnvy 17-x000 - x099HP Pavilion 15 SeriesPavilion 15-p000 - p099Pavilion 15-x000 - x099HP Pavilion 17 SeriesPavilion 17-f000 - f099Pavilion 17-x000-x099HP ProBook SeriesProBook 440 G2 SeriesProBook 445 G2 SeriesProBook 450 G2 SeriesProBook 455 G2 Series Proper Battery Usage For first time usage, please charge the battery for 3 to 4 hours before using the laptop - usually it requires 2 to 3 charge/ discharge cycles before the battery achieves maximum capacity. Best practice is to unplug the charger when the battery is full. And plug in charger when battery reaches 20% to 30%. Usage time depends on how you are using your laptop. eg screen brightness, number of applications running etc. Average time is around 2 to 3 hours of continuous usage. Careful not to short-circuit the battery by placing the terminals in contact with other metal objects.