BTI has bee one of the leading manufacturers of batteries and accessories for notebook puters. It offers products for many manufacturers" notebook puters and cellular phones. By maintaining strict quality standards in production as well as in sourcing BTI is able to provide consistent high-capacity and durable batteries.Primary InformationPower Device Type : AC Adapters Power Device / Form Factor : External Voltage Provided : 19V Power Provided (W) : 90 Watt Enclosure Color : Black Service & Support Type : 1 Year Warranty Features : For DELL PRECISION M20 UNSPSC CodeUNSPSC Code : 39121006