Revive your battery life and improve laptop performance with a new Dell 4M529 battery.
This Dell 4M529 battery is compatible with the Latitude E6400 and E6500 series and the Precision M2400 and M4400 laptop models. It is also compatible with the Dell 4M529, KY265, 312-0749 and KY477 battery part numbers. Additional compatible laptop models and Dell battery part numbers are listed below. You can find your part number listed on the bottom of your laptop next to the P/N tag.
We're serious about quality. That's why we use the highest quality li-ion battery cells and components that charge faster and last longer. Quality parts can make the difference between a 6 month lifespan or a 4 year lifespan. We're so confident in our laptop battery quality that we back each one with a 2 year warranty and 30 day return.
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! If you're looking for even longer battery life check out our 9 cell Dell 4M529 battery.