Reconditioning a "Good" HV Battery

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Kiwi7910, Oct 29, 2023.

  1. Kiwi7910

    Kiwi7910 Junior Member

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    I have a 2007 Gen 2 Prius with 190,000km and the original HV battery.

    Should I assume that the battery will benefit from reconditioning or should I just leave it alone until it fails?

    Here is a snapshot of it's current state...
    Screenshot_20231029-121223.png

    Initially I was planning to recondition each module in turn using a CQ3 charger, but the fact that the battery appears to be working well for it's age, made me think that this was over the top.

    Now I am planning to just clean the bus bars and then discharge the pack as a whole to 28 x 6v using a 220v 800W convection heater as the load. Then charge for 18 hours at 350mA (6500mAh) using an LPC-100-350. I may repeat with a discharge to 28 x 5.4v, but I don't want to do anything that would reduce the life of the battery.
     
  2. Tombukt2

    Tombukt2 Senior Member

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    Well if you're actually going to go in and clean up all the bus bars all the bus bar mounting points tumble your existing nuts and bus bars are replaced them with what's available on the open market pick your poison it's your choice doesn't really matter You're doing all that so I guess draining and recharging draining and recharging probably won't hurt anything the modern chargers won't allow anything to get hurt pretty much or what does get hurt is in pretty bad shape doesn't look like you're in really bad shape so just cleaning up getting new bus bars and nuts. Maybe a decent choice but then if you get that all back together and there's a bunch of hoo ha. Well now you're back into the thing again I mean you can look at your time is not being worth much or anything but reality is usually the opposite. So at the time for me the $1,467 was money well spent then I could spend the rest of my time doing the work that I do and playing around with inverter pumps and changing transmission oil and changing the CM monitor display and all that sort of thing let's meet deal with the other things on the car knowing at least that my HV battery and what have you was straightened out for the next 7 to 10. But I'm driving a car just like your situation right now about 180 or 90,000 mi on original battery car was a one or two owner same family car well taken care of perforated leather interior runs absolutely spot on it just needs a brake actuator
     
  3. Kiwi7910

    Kiwi7910 Junior Member

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    2007 Prius
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    Finished the battery reconditioning. The full write up I here...