Dell Power Companion - Power bank - lithium ion - 4-cell - 12000 mAh - black - for Inspiron 3157, 3558, 55XX, 57XX,

Dell Power Companion - Power bank - lithium ion - 4-cell - 12000 mAh - black - for Inspiron 3157, 3558, 55XX, 57XX, 7568; Latitude 34XX, 35XX, 7280, E5570; Vostro 3459

The Dell Power Companion lets you bring extra power with you, so you can be more productive. This handy device powers select Dell Laptops and Ultrabooks, as well as up to two smartphones, tablets or other USB-enabled devices. It features includes 12,000 mAh 4 cell battery that provides reliable power when you're on the go and is easily charged using your Dell power adapter. Moreover, it is lightweight and compact, so you can stay powered on-the-go without adding bulk to your bag. With all this features and more the two USB charging ports let you simultaneously charge a pair of mobile devices in addition to your Dell Laptop.