UK-based Freeplay Energy Group and Motorola have signed an exclusive, worldwide co-branding and distribution agreement to develop and market a Freeplay-driven wireless phone power source.
The wind-up accessory, which will be compatible with a variety of Motorola and other popular wireless phones, is expected to provide between 3-6 minutes of talk and several hours of standby time for each ’45-second hand-cranking session’.
Freeplay products currently in production today such as radios and torches, use strip steel springs as the primary energy storage device.
The steel spring is energised by winding it from one spool to another against a pre-form. As the spring returns to its original position, it applies rotational torque to a transmission, whose output drives a generator.
The new power source for phones is scheduled to become available in the US later this year.