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Battery Rejuivnator for Lithium Batteries - These batteries are Not Rechargable.
But you can get Considerable Extra Life in this way....(electronic schematic added
12/08)
Charge Li Ion Batteries from AC Line Voltage - 03/03/98 EDN-Design Ideas:
--Converts energy from120 Volt AC to a regulated voltage or Current as necessary to
charge two Li ion Cells in series.....(design idea added 4/02)
Li ion Boost Circuit uses No inductors - 09/12/97 EDN-Design Ideas: -Circuit to
maintain regulated3.3V supply for portable applications.....(design idea added 10/06)
Lithium Ion Battery Charging using Bipolar Transistors - Zetec Semiconductors
Applications Notes This application note explores the different types of charge
techniques and associated discrete pass elements, highlighting the dominant discrete
parameters and selection criteria for each charging technique. (app note added 2/06)
Lithium Ion, Lithium Poly Charger Circuit - The above circuit will charge any
2-cell * Li-Ion battery pack. Maximum current is about 650 milliamps. The circuit is
designed for batteries of 900mah or higher. Note this circuit is NOT for Li-Metal
batts (i.e. Duralites). Power source can be a 12v Gell cell (Power panel), or can be
powered by a car's cigarette lighter. I use an old 12v DC wall transformer (800ma or
more.) Radio shack sells a 12v/1amp wall DC adapter #273-1776 that will work. Supply
does not need to be regulated. In fact my cheap supply outputs 17 volts with no load.
….(circuit design added 11/08)
