HV Battery Compatibilities?

Discussion in 'Generation 1 Prius Discussion' started by cloudstrifens, Dec 18, 2012.

  1. cloudstrifens

    cloudstrifens Junior Member

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    I just bought a 2003 Prius used from a local dealer, and the HV battery is worn out (according to the Toyota dealership that inspected it). Now the dealer wants 3400 for the new battery and installation, but I found cheaper battery online from a second generation Prius.

    My question is, will the second or third generation HV batteries fit in a Gen 1 prius?
     
  2. joedirte

    joedirte Member

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    The battery cells/packs will, but the Gen 1 uses a different number of packs (17?) and different control electronics and ECU, but people often swap out the bad Gen 1 cells with Gen 2 then charge them so they are balanced.
     
  3. cloudstrifens

    cloudstrifens Junior Member

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    Is there a definitive guide somewhere online or on this forum I can find?
     
  4. cwerdna

    cwerdna Senior Member

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  5. northwichita

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  6. bwilson4web

    bwilson4web BMW i3 and Model 3

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    The NHW11 uses 38 modules in 19 pairs. The NHW20 uses 28 modules in 14 pairs. You can replace all NHW11 modules with NHW20 modules and IF you pay attention to charge and capacity, it will run cooler and a long time.

    You might contact ReInVolt in North Carolina. They sell fully rebuilt packs which I switched to in Nov. 2009.

    GOOD LUCK!
    Bob Wilson
     
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