A person who travel and on the road often will appreciate what Xantrex brings to the table. PowerSource Mobile 100 is a portable power source that can power your USB devices and its also equipped with an AC outlet. PowerSource Mobile 100 will be able to power your notebook for around 120 minutes. Unlike having 2nd battery for your notebook, you can use the AC outlet for something else such as your cell phone in case you need to charge up in the middle of train ride and expecting an important phone calls when you notice your battery has been drained. PowerSource Mobile 100 is available for a price tag of $129.99.