Battery type:Li-ion; Voltage:11.1V Capacity:65Wh Compatible P/N: N3X1D T54FJ 8858X Compatible with: Dell Latitude E6540 E6440 E5530 E5430 E6520 E6420 Precision M2800 Series Exclusive Offering of High Performance, Long Lasting, and Durable Grade A Cell Battery Reminder: 1. New replacement battery come with some power, please first discharge and then fully charge. 2. It is best not to completely drain the battery while charging. 3. Don't store the battery for too long without using. 4. Don't put the battery near the fire source to avoid personal safety.