Split-screen messaging, Internet radio, support for a variety of languages and better battery performance were also added to the device.

Ultra-portables don't usually have things like optical drives built-in so that the manufacturer can make the machine smaller and improve battery performance.

High or low working temperatures may reduce battery performance.

I've already had to give it a few charges, and the lower battery performance is apparent very quickly.

This variation made possible to increase the battery performance, i.e. the energy density, the cycle life and other characteristics.

The unit is compact, at 4.9 pounds and 1.35 inches thick, and gets pretty good battery performance.

Less-prominent complaints also include the device overheating and general degradation of battery performance.

High quality separators are very important for battery performance.

For the most part, it appears that they've fixed this, but the battery performance still is a problem for me.

We'll get more in-depth with battery performance in the next section, but some early tests we ran are worth mentioning.