The current power reduction trend will continue as will the advances in battery tech. These combined efforts will soon eclipse product lifetime.
The energy harvesting window is closing faster than the technology is advancing. Once this tech arrives it may only find niche applications.
See article: Industrial Wireless Temperature Transmitter Powered by Heat:
ABB and Micropelt Prove Thermal Energy Harvesting to Solve the Battery Issue of Wireless Sensors
Edited by: ESD editorial staff: SRambo on Mar 15, 2010 10:57 AM