This is a brand new HP Pavilion dv4-4000 replacement battery. There are two key components inside your battery pack to look for when buying a new computer battery. The quality of the battery’s lithium-ion cells and the quality of the computer chip set in the battery pack. This battery is built with the best components, not the cheapest.

This battery is rated at 5200 mAh or 58 Whr. This is the highest rating available for a 6 cell battery pack. The higher the mAh rating, the longer your battery will run before it needs to be recharged again. There are no compatibility issues if your existing battery is rated at 4400 or 4800 mAh or a lower Whr. Simply put, more is better. And yes, this battery is probably better than your original!

All our products carry a full 2 Year warranty and every battery is charged and tested before it ships. We provide a 30-day money back guarantee if you are not completely satisfied. We are so confident in the quality of our batteries, we will pay for any and all shipping expenses if our product fails to perform in the first 30 days you have our battery, even if it is not our fault.

You can expect about 2 hours to 2-1/2 hours of run time with this computer battery when new, depending on your energy use. The higher capacity battery cells inside this cartridge have an energy capacity of 5200 mAh. This battery will be compatible with batteries rated at 4400 & 4800 mAh capacities while providing up to 20% more runtime.

This battery replaces the dv4-4000 laptop batteries and additional machines which are listed at the extreme bottom of this web page. This battery is not compatible with these following models: Pavilion dv3-[1000 to 3999] Pavilion dv5-[1000 to 1999] Pavilion dv6-[1000 to 2999] Pavilion dv7-[1000 to 3999]