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945Re: [force_ev] Thunder Sky batteries

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  • William Glickman
    Feb 5, 2004
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      Is a special charger required ?
      How much do ni-cads cost and at what range ?
      Ni-cads have 4x cycle life of lead acid.

      On Thu, 05 Feb 2004 22:44:51 -0000 "fredfischer55" <ffischer@...>
      writes:
      > Searching for Lithium batteries, I came across the
      > manufacturer's site for these 3.9 volt batteries. The specs for the
      >
      > 100 AH model (LP8581A) show that 44 of these could replace
      > my Force's 50 AH batteries with space to spare. This would
      > double my range. The pack weight would drop from 819 pounds
      > to 291 pounds. This would increase the possible payload from
      > the current 650 to over 1150 pounds.
      >
      > On the downside there is cost: 44 of these batteries cost $6380
      > plus shipping. Battery life may only be slightly better then the
      > lead-acid pack: at 500+ cycles, far less than NiMH.
      >
      > Are there other problems with these batteries? 2x range for 3+x
      > cost is bad, what about current drain during hard acceleration?
      >
      >
      >
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