Get longer battery life and improved laptop performance with a new M5Y1K Battery for the Dell Inspiron 15 5551, 5555, 5558, 3451, 3458 and 3551 models. This M5YIK battery is rated 14.8 volts, 40Wh and will normally last 2-3 hours on a full charge. You can get longer battery life by dimming your screen and closing unused programs and applications.
Note: This M5Y1K 40Wh 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. 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!
This Dell M5Y1K battery is typically superior to the original Dell OEM battery and is 100% compatible with your original Dell M5Y1K battery. Each battery is tested and inspected before shipment and backed by a 30-day complete satisfaction guarantee and a 2 Year warranty.