lead carbon battery PbC Technology

loteklotek Solar Expert Posts: 65 ✭✭✭✭
"Axion Power has developed several technological improvements to traditional lead-acid batteries, and owns numerous patents covering them. Its best-known development is the PbC battery, which substitutes activated carbon for lead on the negative electrode of an otherwise traditionally manufactured absorbed glass mat (AGM) lead-acid battery."

http://www.autobloggreen.com/2009/04/16/axion-and-exide-enter-into-battery-agreement/

Comments

  • dwhdwh Solar Expert Posts: 1,341 ✭✭✭
    Re: lead carbon battery PbC Technology

    Nice. If Exide is licensing it, it's not vaporware. Limited supply and high demand are likely to keep the price up for a while.

    http://www.axionpower.com/profiles/investor/fullpage.asp?f=1&BzID=1933&to=cp&Nav=0&LangID=1&s=0&ID=10298


    "We have been testing laboratory prototypes of Axion's PbC® batteries since April 2004. Our test protocol requires a complete charge-discharge cycle every 7 hours to a 90% depth of discharge. During testing, our laboratory prototypes have withstood more than 1,600 cycles before failure. In comparison, most lead-acid batteries designed for deep discharge applications can only survive 300 to 500 cycles under these operating conditions."


    Hrmm...that might change the math a bit.
  • nielniel Solar Expert Posts: 10,300 ✭✭✭✭
    Re: lead carbon battery PbC Technology

    now i'm not going to call that vaporware and i don't know why you mentioned it, but some have issued licenses for vaporware products in the past.
  • mike95490mike95490 Solar Expert Posts: 9,462 ✭✭✭✭✭
    Re: lead carbon battery PbC Technology
    dwh wrote: »
    During testing, our laboratory prototypes have withstood more than 1,600 cycles before failure. In comparison, most lead-acid batteries designed for deep discharge applications can only survive 300 to 500 cycles under these operating conditions."

    Most lead acid deep cycle batteries are only listed to 50% discharge, not 90%. While the test is not on equal footing, I wonder how lead acid AGM's would fare in the same condition. You have to test to the OEM part specs, not beyond, not to the desired.
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  • dwhdwh Solar Expert Posts: 1,341 ✭✭✭
    Re: lead carbon battery PbC Technology
    mike90045 wrote: »
    Most lead acid deep cycle batteries are only listed to 50% discharge, not 90%. While the test is not on equal footing, I wonder how lead acid AGM's would fare in the same condition. You have to test to the OEM part specs, not beyond, not to the desired.

    Well yes, but testing to failure is a legit test protocol as well.
  • nielniel Solar Expert Posts: 10,300 ✭✭✭✭
    Re: lead carbon battery PbC Technology

    yes, this is true and in fact concorde likes theirs tested to 100% dod and is why i don't want to test mine unless one day i become suspicious. the consistent running down of a battery, even for test purposes, will needlessly take away life cycles. they all should come up with 50% dod test parameters. if they use a heavier current for the test, it will have the same effect for failures to show.
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