This is a brand new HP MC04 premium grade battery. There is a similar battery called the HP MC06 battery which has 6 cells in it rather than 4 like this one. They are interchangeable. The cartridge is the same size. The MC04 is lighter but does not run as long. The MC06 runs longer but weighs about 3 ounces more.
The superior South Korean cells inside the battery cartridge will provide longer run times between charges as well as a longer service life than cheaper batteries. In addition, Li-ion batteries are not subject to the memory effect common with older battery technology. This means you can recharge your HP MC04 Battery any time without diminishing your battery capacity. This HP MC04 4 Cell laptop battery replacement is typically superior to the original battery and is 100% compatible with your hp MC04 notebook computer. The battery is individually tested before shipment and backed by 30 day complete satisfaction guarantee and a 2 Year warranty.
Check your current battery to ensure you are ordering the correct battery. It should match the picture above. This battery will provide about 2 hours to 4 hours of run time with this computer battery when new, depending on your energy use.