Laptop Battery HP 6520 6520P 6520S 6530S 6531S 6535S 511 515 540 541 Series

*Please double check your old battery against our pictures, mainly unique edges and connection points*

Compatible Part Number (Ctrl+F)

451545-361, 456623-001, 484785-001, 500014-001 

NBP6A73, KU530AA, STL-CHA-SON 

HSTNN-OB51, HSTNN-OB51T, HSTNN-DB51, HSTNN-OB51, HSTNN-OB51P 

Compatible Model (Ctrl+F)

HP 540 HP 541

COMPAQ 510 COMPAQ 511 

COMPAQ 515 COMPAQ 516

Business Notebook 6520 6520S 6520P

Business Notebook 6530 6530S

Business Notebook 6535S 

Business Notebook 6531 6531S

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.