The BTI 6-Cell 10.8V Lithium-Ion Notebook Computer Battery in black is designed for Dell laptops, specifically the Latitude E4300 and E4310 models. With a battery capacity of 5600 mAh and a voltage of 10.8V, this battery provides long-lasting power for your device. Made by BTI and compatible with models such as 0P8F45, FM332, and 312-9955, this lithium-ion battery is a reliable and efficient choice for keeping your laptop powered up for extended periods of time.