High-quality CMOS BIOS RTC Battery: This CR2032 battery is specifically designed for laptops and has high-quality performance and reliability, so you can say goodbye to laptop time and date setting issues! Compatibility: This battery is universal and compatible with most laptop brands and models, which means you only need to buy one battery to use on multiple laptops. Compatible with Dell Latitude E4310 E5400 E5410 E5510 E6400 E6410 E6500 E6510 E6400 Atg.