DCB1800B 1800 Watt Portable Power Station delivers 1800W continuous and 3600 peak AC power when supplied with four DeWalt 20V MAX batteries, sold seperately. DCB1800B is also a multiport battery charger for one to four 20V MAX batteries. DCB1800B emulates a 15A residential circuit branch delivering the feel of household AC power. Patent Pending modified sine wave is compatible with both standard and electronically controlled variable speed tools. DCB1800B is self-protecting against electronic overload and includes multiple protection features in battery charging. DCB1800B can be used in a variety of applications including jobsite, and lifestyle use. It requires no gas to run, emits no engine fumes or noise and can be used in virtually any dry location.