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Hello Carsten, I'm used to seeing Lithium Polymer Li-Po batteries used in electric RC planes, and they do have a very good power to weigh ratio. But they are not usually very fast charging and tend to have memory problems if not taken care of properly. The guys I talked to at the RC hobby store told me they can't wait for Li-ions to be available for their planes with out having to modify a Li-ion battery designed for a digital video camera or a cordless power tool. I'm designing a submersible all electric RC plane, and the best power to size and weight Li-ion battery I could find was the Apple Ipod replacement batteries. I don't know any thing about larger Li-Po batteries, but if they are like there smaller counter parts, and reasonably priced, they might be a great option for PSUBs to have longer endurance time. Regards,
Brent Hartwig > Subject: RE: [PSUBS-MAILIST] SubCat S-30 Data > From: MerlinSub@t-online.de > To: personal_submersibles@psubs.org > Date: Tue, 1 Jan 2008 10:31:00 +0000 > > > http://kokam.com/english/product/battery_main.html > > ;-) > > regards Carsten > > > "Brian Cox" <ojaivalleybeefarm@dslextreme.com> schrieb: > > Frank, > > Part of the team that is producing the Phoenix Motorcars is > > based here in Ojai, CA and I happened to talk with one of the principal > > persons about this very subject about a year ago. What he told me was the > > battery that is being made for the Phoenix is a custom made deal > > specifically for the car and that the cost of it is out of the universe. > > Apparently it is going to be quite a while before those batteries will be > > available to the general public. The only way you could get your hands on > > one of those batteries is to buy one of the cars and there is a really long > > waiting list for that. > > > > Brian > > -----Original Message----- > > From: owner-personal_submersibles@psubs.org > > [mailto:owner-personal_submersibles@psubs.org]On Behalf Of > > ShellyDalg@aol.com > > Sent: Monday, December 31, 2007 9:33 AM > > To: personal_submersibles@psubs.org > > Subject: Re: [PSUBS-MAILIST] SubCat S-30 Data > > > > > > Brent. It sure would be nice to get some of those Li-ion batteries they're > > using in the plug-in electric cars. > > Some companies are making them the size of car batteries, and the flash > > recharge time to 80% is as low as 6 minutes, with a 100% charge taking 4 > > hours. > > A car company here in Calif. called Phoenix Motorcars is producing small > > trucks for fleet use, and they have the batteries, but when can the general > > public get some ? I wonder if a group such as ours could get them to sell us > > some for testing in a sub ? I recall their site ( the battery co. ) as > > saying they promote testing their batteries in different applications. > > The best one I've seen uses a nano type material, I think it was phosphate > > based, with virtually no danger of fire or explosion which was common on > > some of the other types of Li-ion batteries. > > Frank D. > > > > > > > > > > > > ---------------------------------------------------------------------------- > > -- > > See AOL's top rated recipes and easy ways to stay in shape for winter. > > > > > > > ************************************************************************ > ************************************************************************ > ************************************************************************ > The personal submersibles mailing list complies with the US Federal > CAN-SPAM Act of 2003. Your email address appears in our database > because either you, or someone you know, requested you receive messages > from our organization. > > If you want to be removed from this mailing list simply click on the > link below or send a blank email message to: > removeme-personal_submersibles@psubs.org > > Removal of your email address from this mailing list occurs by an > automated process and should be complete within five minutes of > our server receiving your request. > > PSUBS.ORG > PO Box 53 > Weare, NH 03281 > 603-529-1100 > ************************************************************************ > ************************************************************************ > ************************************************************************ > |