Does your Dell battery not last as long as it used to? Revive your battery life and improve laptop performance with a replacement Dell Latitude PT434 battery from Laptop Battery Express. We use the highest quality lithium-ion battery cells that charge faster and last longer.

This Dell 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 PT434, 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. Don't see your model listed here? Go to our Dell laptop battery page for the full catalog or call our tech support. Chances are we've got it in stock!

We're serious about quality. That's why we use the highest quality li-ion battery cells and components. 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!