Powering portable products

The energy a product uses throughout its life span is often the product's most significant environmental impact. Besides bringing energy efficiency to products, there are a variety of sources of power that can be used. From efficient, non-polluting fuel cells to thermic energy (body heat), to wind-up springs (human power).


This flashlight developed by Freeplay Corporattion uses a wind-up spring mechanism to store energy that powers the product.

This Motorola prototype cell phone
is powered by a fuel cell

This thermic watch produced by Seiko Corporation runs on body heat - not disposable batteries