If you're in the market for a laptop that will last you from LA to New York, or longer, the Air's not for you. This week I discuss four other portables with batteries that probably won't run out of juice before you do.

By the way, if you're not in the market for a new laptop, you can buy external battery packs to keep you going. The is a good option. It's about US$116 and up online; go to for pricing.

Lenovo ThinkPad X200

This ultraportable offers superb battery life. We tested the ThinkPad X200 with a nine-cell battery option--and got nearly nine hours of use from a single charge. The battery added less than a pound to the computer, bringing the total weight to only 3.7 pounds. Upgrading from the standard four-cell battery to the nine-cell adds $50 to your system's overall costs. Go to the for our detailed review, plus pricing.

Dell Latitude E6400