Best replacement battery for 2nd gen Prius?

Discussion in 'Gen 2 Prius Technical Discussion' started by Shawn W., Jun 25, 2026 at 2:55 PM.

  1. Shawn W.

    Shawn W. Junior Member

    Joined:
    Jun 8, 2022
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    Location:
    Niagara Falls
    Vehicle:
    2004 Prius
    Model:
    N/A
    My 2004 Prius was recently totaled in an accident that was caused by someone making a blind lane change, but my father has a 2005 Prius that he isn't using for, reasons, with dead hybrid and auxiliary batteries. The auxiliary is easy enough to replace, but what's the best replacement for the hybrid battery? I've never been in a position to do a full replacement. I've read about refurbished NiMH batteries, new builds, lithium ion, and sodium ion, and I have no idea where to go from here. Which type, company, etc.? Any advice would be appreciated.
     
  2. PriusCamper

    PriusCamper Senior Member

    Joined:
    Mar 3, 2012
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    Location:
    Pacific Northwest, USA
    Vehicle:
    2007 Prius
    Model:
    Two
    If you want to keep using battery chemistry that was considered the most advanced/modern in late 80's early 90's then stick with OEM. But if you want a future proof solution that will be the most advanced/modern battery chemistry of the late 20's and early 30's you want a Sodium-Ion pack which will improve your Prius overall performance in many, mnay ways. Just head to www.saltyhybrid.com and scroll down and find an installer near you who can order a pack and install it for you.