Comments on: Energy Harvesting White Paper from Sentilla http://www.wsnblog.com/2008/09/19/energy-harvesting-white-paper-from-sentilla/ New products, books, conferences, papers, wsn for development Thu, 08 Jan 2009 16:39:36 +0000 http://wordpress.org/?v=2.6.2 By: sol jacobs http://www.wsnblog.com/2008/09/19/energy-harvesting-white-paper-from-sentilla/#comment-120603 sol jacobs Fri, 19 Sep 2008 16:20:59 +0000 http://www.wsnblog.com/2008/09/19/energy-harvesting-white-paper-from-sentilla/#comment-120603 see www.tadiranbat.com for more info. see http://www.tadiranbat.com for more info.

]]> By: sol jacobs http://www.wsnblog.com/2008/09/19/energy-harvesting-white-paper-from-sentilla/#comment-120601 sol jacobs Fri, 19 Sep 2008 16:20:11 +0000 http://www.wsnblog.com/2008/09/19/energy-harvesting-white-paper-from-sentilla/#comment-120601 While the author describes the use of either alkaline or lithium sulphur dioxide cells as alternatives, these chemistries are not used in wireless sensors that have to last for years so that the analysis is wrong. Lithium thionyl chloride cells are in fact used in MILLIONS of remote, wireless devices such as AMR meters, RFID toll transponders, wireless sensors, GPS tracking devices, etc. In fact, a very large utility has AMR devices made by ACLARA (formerly Hexagram) entering their 24th year of operation on their original lithium cells. Why invest in an expensive, unproven technology, that needs batteries anyway for back up power, when lithium batteries are proven and inexpensive? While the author describes the use of either alkaline or lithium sulphur dioxide cells as alternatives, these chemistries are not used in wireless sensors that have to last for years so that the analysis is wrong.

Lithium thionyl chloride cells are in fact used in MILLIONS of remote, wireless devices such as AMR meters, RFID toll transponders, wireless sensors, GPS tracking devices, etc. In fact, a very large utility has AMR devices made by ACLARA (formerly Hexagram) entering their 24th year of operation on their original lithium cells.

Why invest in an expensive, unproven technology, that needs batteries anyway for back up power, when lithium batteries are proven and inexpensive?

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