The Total Micro 55 Whr 4 - Cell Primary Lithium - Ion Battery is a high - performance battery specifically designed for notebook computers. With a proprietary battery size, it is smaller and lighter than many other rechargeable batteries, making it an ideal choice for portable devices. This rechargeable battery provides longer usage on a single charge compared to disposable batteries, ensuring that your notebook is always ready for use. Compatible with various Dell Latitude notebooks, including the 14 (E7470) SKL - U, E7270, and 7470, this battery is an essential accessory for users who require dependable power on the go.