Replace your worn-out battery with a brand new HP 509422-001 battery. This 509422-001 battery is rated 14.4 volts and 5200 mAh and will normally last 3 hours on a full charge.
This HP 509422-001 battery replaces the original battery found in HP Pavilion dv7t-1000, dv7t-1100, dv7t-1200, dv7-2000, dv7t-2000, dv7t-2200, dv7t-3000, dv7t-3100, dv7t-3300, dv7t, dv7z, and dv8 models. This battery fits all machines that are within the ranges of these HP laptop models:

Tech Specs

Xtend
14.4 Volts- compatible with 14.8 V
5200 mAh or 73 Whr; more run time than 4400 mAh batteries
8 Cell Li-ion (12 Cell Click Here)
Samsung (South Korea)
Black
2 Year Warranty
30 day full satisfaction guarantee
300-500 recharge cycles

You can expect about 2 – 3 hours of run time with this HP 509422-001 battery when new, depending on your energy use. If you are looking for even longer battery run times, check out our extended run battery for your HP laptop. The higher capacity battery cells inside this cartridge have anenergy capacity of 5200 mAh.