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Thread: Li-ion AA batteries are coming soon

  1. #1

    Default Li-ion AA batteries are coming soon

    http://www.newscientist.com/article.ns?id=dn7081

    "A rechargeable battery that can be fully charged in just 6 minutes, lasts 10 times as long as today's rechargeables and can provide bursts of electricity up to three times more powerful is showing promise in a Nevada lab....

    The highest energy-per-weight ratio in today's batteries is provided by lithium-ion (Li-ion) batteries. They are also cheaper in terms of energy delivered per unit of weight than alternative types of battery such as nickel-metal-hydride (NiMH) and nickel-cadmium (Ni-Cd) types. But Li-ion cells have their drawbacks too. They eventually wear out, and they cannot discharge energy quickly enough for applications requiring power surges, such as camera flashguns and power tools."

    No mah ratings were given for the prototype battery but 10 times more than today's standard 2000mah ?? Wow.

  2. #2
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    Lithium AA are already available at EastGear and w3cube I suppose.

  3. #3

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    Quote Originally Posted by theITguy
    Lithium AA are already available at EastGear and w3cube I suppose.
    I think he is refering to RECHARGABLE AA Lithium batts. Those Lithium AA you see in the markets are use once batteries, not rechargable.

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    Quote Originally Posted by RossChang
    I think he is refering to RECHARGABLE AA Lithium batts. Those Lithium AA you see in the markets are use once batteries, not rechargable.

    Before you CLAIM anything, read THIS

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    Quote Originally Posted by theITguy
    Lithium AA are already available at EastGear and w3cube I suppose.
    are u sure available at eastgear? never see them there.

    does the batts last longer than say, the Sanyo 2500mah AA? be'cos they are only 1300mah.

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    Quote Originally Posted by nad
    are u sure available at eastgear? never see them there.

    does the batts last longer than say, the Sanyo 2500mah AA? be'cos they are only 1300mah.

    I did not really check them out at EastGear, thats why I say "I suppose" in my statement. Anyway, w3cube is just across the road at The Aldephi, no harm going there to check out after going EastGear right?

    Ratings are subjective (look at GP rechargables). I have not dare use them for my flash gun (no point since I seldom use flash anyway, plus I got AAs around underutilised).


    Just some information on w3cube:

    I bought my Iriver MP3 CD player there 3 years back. They are the earlier battery + MP3 player (specialised in these 2) company I knew of. Customer service is top notch the last time, now I am not sure. OF course I am not advertising for them or what, feeding back as a satisfied customer.

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    the shape does not allow the use to most of my parts.
    Logging Off. "You have 2,631 messages stored, of a total 400 allowed." don't PM me.

  8. #8

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    Quote Originally Posted by theITguy
    Before you CLAIM anything, read THIS
    Er... dude... those are no AA batts... those are RCR-V3 rechargable batts... althou they are Lithium, but not AA Batts... dun think you can slot two of those batts in a external flash such as the 420Ex...

    If can, let me know, I'll buy a set to try out...

  9. #9

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    Quote Originally Posted by theITguy
    Before you CLAIM anything, read THIS
    Seen this on the net since like beginning of last year already. East gear is selling, i think 49 bucks with charger or what. One of my clients wanted to buy but i think in the end Eastgear themself told her to get Sanyo 2500s. Skeptical about lasting 3X as long compared to Sanyo 2500 unless your application is really high current draw (NiMH wastes it as heat), like in heavy bursting flash.

    I used normal non-rechargeable Li RC-V3 before on a Oly C5050. At most twice longer than Sanyo 1850s?

  10. #10

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    ..
    One way to solve the issue is to have the battery size similar to single pcs AA battery....

    It will kill the NiMh battery...

    Yappy

  11. #11

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    Quote Originally Posted by Yappy
    ..
    One way to solve the issue is to have the battery size similar to single pcs AA battery....

    It will kill the NiMh battery...

    Yappy
    They said that is impossible to design/manufacture as Li-ion is quite different. Besides, 1 cell is 2V or something like that for Li-ion, which is far off from the 1.5V approx for the usual batts.

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    Quote Originally Posted by RossChang
    Er... dude... those are no AA batts... those are RCR-V3 rechargable batts... althou they are Lithium, but not AA Batts... dun think you can slot two of those batts in a external flash such as the 420Ex...

    If can, let me know, I'll buy a set to try out...

    My mistake. Apologies.

  13. #13

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    '...fully charged in just 6 minutes, lasts 10 times as long...' ?

    Great news!...

    But things in the New Scientist can be far ahead (it could take a few years for production models to make it out here). Am still waiting for the rollable bio-screen I saw in an edition 5(?) years back... almost here... (still.. batteries should make it faster, but I won't be holding my breath). Thanks for the news though - one day we'll all be able to work with only one set of batteries

  14. #14

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    Yes, I still remember cold fusion.

    I must say though that technology is moving along at a good clip, and I am being wowed regularly every now and then.

    Who would have thought I could fit my entire music collection onto a pocket device?

    Must.... Not.... Buy.... Anything...

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    using a 3V lithium/lithium-ion battery for equiptment meant for two 1.5V alkaline, NiCD or NiMh batteries may not be such a good idea...

    I can recall the news about fuel cells, no need to recharge, just refuel. Sounds like a really promising deal.

  16. #16

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    Quote Originally Posted by 2100
    They said that is impossible to design/manufacture as Li-ion is quite different. Besides, 1 cell is 2V or something like that for Li-ion, which is far off from the 1.5V approx for the usual batts.
    Hope that some day some smart guy can come with a replacement. National has a Oxy... type of batteries it last twice as long a normal alkaline cell bat.
    I saw them in a NTUC Supermart.. $6.90 for 4 pcs. If you need urgent supply. Buy them!

    Yappy

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    Quote Originally Posted by StreetShooter
    Yes, I still remember cold fusion.

    I must say though that technology is moving along at a good clip, and I am being wowed regularly every now and then.

    Who would have thought I could fit my entire music collection onto a pocket device?

    Must.... Not.... Buy.... Anything...
    I remember years ago they also mentioned a virtual monitor screen that you can wear on your wristband.....
    The bigger question is, where is the money to buy all these hi-tech gadgets?

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