Get longer battery life and improved laptop performance with a new Dell P51F battery. This P51F battery is compatible with the Dell Inspiron 15 5551, 5555, 5558, 3451, 3458, and 3551 models.

Note: The Dell P51F battery is NOT COMPATIBLE with the Dell Inspiron 15R series. If your model has an R in it, it will not work. Go here for the Inspiron 15R battery. There can be confusion with Inspiron 15 laptops. An Inspiron 15 laptop means it has a 15-inch screen (measured diagonally). The numbers that follow the 15 indicate your specific model with a 15-inch screen.

We use the highest quality lithium-ion battery cells and components that charge faster and last longer than cheaper lower quality batteries. Lower quality batteries can wear out in as little as 6 months. Our batteries can last up to 5 years.

Li-ion batteries are not subject to the memory effect common with older battery technology. This means you can recharge your laptop any time without diminishing your battery capacity. This P51F battery is typically a higher power rating than the original battery and is 100% compatible with your Dell Inspiron 15 (5558) 3451 3458 3551 computer. Each battery is individually tested before shipment and backed by a 30-day complete satisfaction guarantee and a 2 Year warranty.

Not all batteries have the same capacity and run times. The higher quality battery cells inside this cartridge have an energy capacity of 2600 mAh. These are the highest quality Li-ion batteries on the market today and superior to the cheap batteries you see elsewhere online. This Dell P51F battery replaces the 6 cell Dell Inspiron 15 (5558) 3451 3458 3551 series laptops.