Guralnik et al., using a small battery of functional tests, have shown that lower extremity function is an important parameter for the prediction of disability in later years [ 154].
Because the buses have modest range requirements, they use a smaller battery, which makes them lighter and less expensive than those that require larger batteries.
All mechanically ventilated patients requiring a TTE study with a full-feature echocardiographic platform (Sonos 5500®; Philips Medical Systems, Andover, MA, USA) also underwent an echocardiographic examination using a small battery-operated device (33 × 23 cm, 3.5 kg) (Optigo®; Philips Medical Systems).
TENS is done using a small, battery-powered machine that is about the size of a pocket radio.
GPS uses a lot of power, but we could only use a small battery, so in order to save energy, we used an activity sensor to trigger the GPS only when the cat was moving.
All this stuff is with an upgrade to a solid state drive, using a smaller 3-cell battery, and without the optical drive built in.
First, you open up the front side of the battery using a small flathead screwdriver to pry each end apart.
Recently, Nelson (2010) has shown how this PSI could be used as a small battery charger (Nelson 2010).
That would easily bring battery life to several days or even a week, or allow us to use a much smaller battery".
The watch uses a small CR2032 battery and doesn't need to be recharged.
