Get longer battery life and improved laptop performance with a new M5Y1K Battery. This battery is compatible with the Inspiron 15 5551, 5555, 5558, 5559, 5755, 3451, 3458, and 3551 models.

Note: This 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. This battery is compatible ONLY with the Inspiron 15 5551, 5555, 5558, 3451, 3458, 3551 and 3558 models. Don't see yours listed? Go to our Dell laptop battery page for the complete list.

We use the highest quality lithium-ion battery cells and components that charge faster, last longer and weigh less than cheaper, lower quality batteries. Lower quality batteries can wear out in just a few months. Ours can last for up to 5 years if properly cared for.

This laptop battery replacement is typically superior to the original battery and is 100% compatible with your Dell Inspiron 15 (5558) 3451 3458 3551 laptops. The battery is individually tested before shipment and backed by a 30-day complete satisfaction guarantee and a 2 Year warranty.