This high quality Total Micro 6-Cell 5800mAh 65Wh Li-Ion battery meets or exceeds OEM specs. For the Dell Latitude E5420, E5430, E5520, E5530, E6420, E6430, E6440, E6520, E6530, E6540. One year limited warranty. Eqv 312-1324, 312-1163, T54FJ, DHT0W