Reconditioning Experience with Hybrid Automotive's Prolong System

Discussion in 'Gen 2 Prius Main Forum' started by biglew8, May 16, 2017.

  1. jerrymildred

    jerrymildred Senior Member

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    I believe with the automatic discharger, you have to select the target voltage. Did you remember to set it to 84V as you began the 2nd discharge cycle?
    Prolong® Battery Discharger User Guide – Hybrid Automotive
     
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  2. calin.ceascai

    calin.ceascai Junior Member

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    Of course but the first case set to discharge 134V and last time that I checked the voltage was 143V. After 1 hour the discharger was idle, buzzer on voltage 151V. So may be I was late with checking the status. Is this possible?

    Huawei P10 Leica
     
  3. Prodigyplace

    Prodigyplace Senior Member

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    That number appears to be within the bounce-back range mentioned in post 640. I remember discussions about this when the intelligent discharger first started shipping. @jeff652 assured people this was to be expected.
     
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  4. jerrymildred

    jerrymildred Senior Member

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    Probably. It bounces back quite a bit when you stop discharging. I have the manual discharger (light bulbs) and it's pretty amazing to watch the volt meter climb when I unscrew a bulb to change them.
     
  5. calin.ceascai

    calin.ceascai Junior Member

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    This bouncing back is not hurting the hv battery?

    Huawei P10 Leica
     
  6. jerrymildred

    jerrymildred Senior Member

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    Nope. It's normal battery behavior. All rechargeables do that as far as I know.
     
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  7. calin.ceascai

    calin.ceascai Junior Member

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    Thanks.

    Huawei P10 Leica
     
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  8. jerrymildred

    jerrymildred Senior Member

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    Happy to help. Once my wife's battery gets old enough to need grid charging, I'll definitely be wanting one of those automatic dischargers. I have the old original square, black Prolong with the lightbulb discharger. Lots of babysitting there.
     
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  9. k1ngn0thing

    k1ngn0thing Member

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    I'm on my third discharge now, and there might be some rain during the final charging. Is it "safe" to pause during this charging in order to roll my other 3 windows up? I assume stopping the charge midway and resuming once the weather passes is even less advisable.
     
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  10. calin.ceascai

    calin.ceascai Junior Member

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    I just finished the third discharge that to 17 V. Now one more step. Final charge and balancing. Screenshot_20180320-220222.jpg

    Huawei P10 Leica
     
  11. Raytheeagle

    Raytheeagle Senior Member

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    You can roll the windows up;).

    The bulb discharge guys have to take momentary pauses to change bulbs:whistle:.

    Good luck and keep us posted (y).
     
  12. Raytheeagle

    Raytheeagle Senior Member

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    I’m impressed you caught the exact voltage:).

    It cycles pretty quick at the very low voltages;).

    Keep us posted (y).
     
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  13. k1ngn0thing

    k1ngn0thing Member

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    Surprised you were able to catch it right at 17. Watched mine from 18-17 and as soon as it hit 17 it immediately shot up to 30+
    welp, I've already started the last charge, so I assume it's not a good idea to do so without waiting for an hour or more for the battery to cool
     
  14. Raytheeagle

    Raytheeagle Senior Member

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    You can use accessory mode as that won’t engage the hybrid battery
    ;).

    And rolling the windows up only takes a few seconds:).

    Or open the doors and put blankets or towels over the windows, then close the doors and it will prevent severe water intrusion (y).
     
    #654 Raytheeagle, Mar 20, 2018
    Last edited: Mar 21, 2018
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  15. k1ngn0thing

    k1ngn0thing Member

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    Reconditioning the pack made the bad module/s worse (was only .02 off prior).

    I expect I'll find corrosion on the connection. Wonder if cleaning this first would have allowed the prolong process to work. If anyone knows of a shop in New England that will replace the bad module/s and clean the bus bars for a reasonable price, I'm looking for suggestions.
     
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  16. edthefox5

    edthefox5 Senior Member

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    Odd that the delta is not reflecting that difference in voltage of block 7.

    The prolong works best if the pack is just tired and has not thrown codes yet. Fully discharging and chArging will sometimes reveal a weak module,
    But at least you have rejuvenated the rest of the modules,

    The whack a mole pack rebuild is dicey. If you find a rebuilder locally and hopefully not in Craig’s list post them here first for reviews. Some are really bad and outright crooked.

    I wish PC would have a battery rebuilder forum. Just reviews of pack rebuilders and posters could post there experience with them. Now there all over the place.

    If you find a rebuilder try searching his name in the Search Forums button on top of this page.
     
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  17. Raytheeagle

    Raytheeagle Senior Member

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    Check out the hybrid automotive website as there is an installer map;).

    I’d try calling them and seeing what they do and if they don’t, they might know someone who does :).

    Block 7 is your suspect though(y).
     
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  18. k1ngn0thing

    k1ngn0thing Member

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    waiting to hear back from Priuskings and HybridAutomotive. no option but to play the mole game (and my pack is supposed to be new, 8k miles ago).
     
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  19. dolj

    dolj Senior Member

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    It is probably more of a case that Block 7 was not capable of being recovered whereas the other blocks have been balanced.

    Block 7 indicates problems with at least 2 cells within the block, One in each module? Or both in the same one, if you're lucky.
     
  20. k1ngn0thing

    k1ngn0thing Member

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    replacing both just to be safe. will diagnose them later to see which, if either, is worth keeping
     
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