TPE 5200mAh Extended Battery Replacement for DELL Latitude E6400 E6500 Precision M2400 M4400 Series fits PT434 PT435 KY477 FU268 FU571 MN632 MP307 NM631 Battery type: Li-ion; Capacity: 5200mAh 58Wh; Cells: 6-cell; Voltage: 11.1V. Use the keyboard shortcuts Ctrl+F or -F (Mac) to quickly crosscheck if your requested model is listed in the following Compatible Laptop Model List or Compatible Parts Number List. Up to 500 cycles service life, low self-discharge, no memory effect; Dual IC chips provide protection against short circuit, over-discharge, overcurrent. CE/FCC/RoHS certified for product safety. Grade A Cell ensures fast charging and low power consumption; Operation time: Around 2.5 hours. In reality, this will depend on the amount of electricity required by the device and how you use it. TPE only deals with brand new premium replacement batteries. We only use the highest quality cells inside the battery pack so you will have a long service life. Our inventory turns rapidly and you will always receive a freshly manufactured battery.