However, there isn't much point at the moment The weight saving is small for the same capacity, but the cost difference is huge.
As an example, a 10Ah LiFePO4 battery in the "standard" size most of use weighs 1.92kg. An equivalent 9Ah SLA weighs 2.55kg On 25/02/2013, at 21:33 , Matthew Scutter <[email protected]> wrote: > What's (hopefully) getting popular in gliders now is lithium *iron* > (LiFePO4) rather than lithium-ion. > That one little r is the difference between a fireball and a sizzle > [http://en.wikipedia.org/wiki/Lithium_iron_phosphate_battery#Safety] > > On Mon, Feb 25, 2013 at 8:55 PM, Mark Newton <[email protected]> wrote: >> >> On 25/02/2013, at 8:33 PM, Craig Vinall <[email protected]> wrote: >> >> Thought this may be of interest. I know that these batteries are becoming >> popular in gliders; what do others think? Is there a potential fire risk? >> >> >> Probably the wrong question to ask, given that you could just as easily >> inquire into whether >> there's a potential fire risk inherent in carrying around tanks of volatile >> hydrocarbons. >> >> More useful questions would be, "Under what conditions can a fire start," >> and, "Once it >> has started, what can you do about it?" >> >> By my money, the worst parts about the event in NY weren't associated with >> the fact that >> the batteries caught fire; the worst bits were the fact that Boeing had >> assured the FAA >> that thermal runaway was impossible (it clearly wasn't) and the fact that it >> took fire crews, >> with all their training and specialized equipment, more than 40 minutes to >> extinguish it. >> >> Could have been worse -- could have been over the Pacific somewhere at the >> limits of >> ETOPS. >> >> ANA has grounded their 787s until at least May, so there'll be a lot of time >> to ponder those >> issues before they start flying again. >> >> - mark >> >> >> >> _______________________________________________ >> Aus-soaring mailing list >> [email protected] >> To check or change subscription details, visit: >> http://lists.internode.on.net/mailman/listinfo/aus-soaring > _______________________________________________ > Aus-soaring mailing list > [email protected] > To check or change subscription details, visit: > http://lists.internode.on.net/mailman/listinfo/aus-soaring
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