Fwd: [Texascavers] battery related
-- Forwarded message -- From: Don Cooper List-Post: texascavers@texascavers.com Date: Sun, Aug 23, 2009 at 12:33 AM Subject: Re: [Texascavers] battery related To: Lyndon Tiu Cc: David And of course, please note - "Lithium" does NOT imply "Lithium-Ion". Lithium Ion also should incorporate either the direct connection to, or have a built in micro-controller to regulate charge and discharge, since Lithium Ion cells can generate enough heat to self-ignite. -WaV On Sun, Aug 23, 2009 at 12:22 AM, Lyndon Tiu wrote: > Don Cooper wrote: > >> Lithium Ion is probably the superior in terms of power to weight. >> > > http://en.wikipedia.org/wiki/Lithium_battery#cite_note-7 > > http://en.wikipedia.org/wiki/Lithium-ion_battery > > > On Sat, Aug 22, 2009 at 9:45 PM, David > dlocklea...@gmail.com>> wrote: >> >>This is probably old news, but I just found out about it. >> >>Energizer's patent on lithium batteries expired a year ago. About >>that time, there >>was some post about a new Energizer lithium battery being marketed >>with less juice and >>a little cheaper. >> > > -- > Lyndon Tiu >
Re: [Texascavers] battery related
Lithium Ion is probably the superior in terms of power to weight. Nickel Metal hydride is cheaper, but quite superior to older batteries like NiCad and Lead Acid. (Lead Acid though can support millions of charge/discharge cycles - I don't think any other battery can compete in that parameter, except maybe fuel cells) Correct me if I'm wrong. -WaV On Sat, Aug 22, 2009 at 9:45 PM, David wrote: > This is probably old news, but I just found out about it. > > Energizer's patent on lithium batteries expired a year ago. About > that time, there > was some post about a new Energizer lithium battery being marketed > with less juice and > a little cheaper. >
[Texascavers] battery related
This is probably old news, but I just found out about it. Energizer's patent on lithium batteries expired a year ago. About that time, there was some post about a new Energizer lithium battery being marketed with less juice and a little cheaper. The going rumor is that Energizer did this to keep other companies from jumping in and beating them in the lithium battery market. Anyways, Rayovac stepped up to the plate and sold a pre-charged NiMH battery, aimed at competing with the lithiums, called the Rayovac 4.0. Rayovac's advertising on the battery claims "rechargeable lithium technology." Here is what it actually does, according to Rayovac: "we have added a lithium compound to the cell that coats the electrodes and limits the self-discharge. The cell does not contain a lithium anode like a true lithium cell. The cell is still NiMH with a lithium additive to the electrolyte." Does that sound deceptive to you ?? Apparently, these have been at Fry's and Costco for over a year, but I just saw them. David Locklear - Visit our website: http://texascavers.com To unsubscribe, e-mail: texascavers-unsubscr...@texascavers.com For additional commands, e-mail: texascavers-h...@texascavers.com
