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Technology Stocks : VALENCE TECHNOLOGY (VLNC) -- Ignore unavailable to you. Want to Upgrade?


To: Lonnie Yearwood who wrote (1505)12/4/1997 2:08:00 AM
From: Larry Brubaker  Respond to of 27311
 
Lonnie: Go back and read the thread about the time that article came out. You'll find your answers.



To: Lonnie Yearwood who wrote (1505)12/4/1997 4:03:00 AM
From: Gordon Quickstad  Respond to of 27311
 
IBM's and Motorola's efforts on a LPB in the early '90's would predate the Bellcore patent that is the enabling technology here. There were attempts at an LPB with metallic lithium foil by VLNC when they first started up in 1989. The metal version of the battery has the highest energy density but is plagued with safety problems: lithium reacts violently with water (ever wonder why the move from San Jose to Henderson, NV?). It also forms dendrites (metallic migration) which short out the battery, creating a lot of heat. VLNC announced the licencing of the Bellcore patent on 7/6/95. I forget the actual date of the Bellcore patent (I've posted it and the number on this thread before) but i think it was in 1994 or early 1995. IBM and Motorola were working with an older, flawed, technology. However, Tadiran (an Israeli company) has successfully made a lithium foil LPB but it's an AA size which keeps the lithium content under 1 gram which avoids special handling requirements.