DIY Grid Reconditioning Charger

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Abarnabe, Sep 13, 2020.

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  1. Abarnabe

    Abarnabe Member

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    I can confirm that this is not what prolong instructions says and can potentially damage the battery.
     
    #81 Abarnabe, Jul 24, 2025
    Brian1954 and johnHRP like this.
  2. johnHRP

    johnHRP Active Member

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    Yeah..., just sell the prolong and cash it to add funds for new battery
     
    #82 johnHRP, Jul 24, 2025
  3. A.J

    A.J Junior Member

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    You mean the bulb discharge wattage or which?

    Saw this video of a guy who used the Automated Prolong Charger and Discharger


    1st: Charge-Discharge 240+-~ to 134vdc.
    2nd: Charge-Discharge 240+~ to 101vdc
    3rd: Charge-Discharge 240+~ to 84vdc
    Then Charge

    UPDATE:
    My latest bulb arrangement for 220v bulbs:

    First Discharge:
    240+-~ to 196v: 400w or less bulb
    196v to 134v: 150w or less bulb

    Second Discharge:
    240+-~ to 196v: 400w or less bulb
    196v to 134v: 150w or less bulb
    134v to 101v: 50w or less bulb

    Third Discharge:
    240+-~ to 196v: 400w or less bulb
    196v to 134v: 150w or less bulb
    134v to 84v: 50w or less bulb

    But i use 60w in replacement for the 50w because i can't get a 50w bulb around.
    I have now attached the Prolong bulb charge voltage and wattage guide too.
    Discharge-Arrangement-Voltage.png Light-Bulb-Discharge-Table.png
     
    #83 A.J, Jul 24, 2025
    Last edited: Jul 25, 2025
  4. PriusII&C

    PriusII&C Active Member

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    @Abarnabe Care to elaborate what's not right in @A.J's statement?
     
    #84 PriusII&C, Jul 24, 2025
  5. PriusII&C

    PriusII&C Active Member

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    Another question: do you need to turn on the traction battery fan during discharge, assume the light bulbs are located away from the battery and the surrounding is not extremely hot? I know you need the fan during charging to keep the battery from overheating.
     
    #85 PriusII&C, Jul 25, 2025
  6. A.J

    A.J Junior Member

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    I have updated my post above with an updated wattage arrangement, it seem to revolve around the bulb wattage change arrangement.
     
    #86 A.J, Jul 25, 2025
  7. Abarnabe

    Abarnabe Member

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    thiz is correct
    You don' t need the fan while discharging, in my experience
     
    #87 Abarnabe, Aug 7, 2025 at 9:41 AM
  8. Abarnabe

    Abarnabe Member

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    Prolong has all the instructions on their website. Just follow the instructions as Brian said, what is worng in your first and second statements are wattage and voltages, below certain voltages you should lower the bulb wattages to reduce the risk of cell damage and pole inversion
     
    #88 Abarnabe, Aug 7, 2025 at 9:47 AM
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