Hybrid battery

Discussion in 'Prius c Technical Discussion' started by fahadw2000, Jul 1, 2019.

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  1. fahadw2000

    fahadw2000 New Member

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    My hybrid battery keeps on charging but sometimes it does not show that it is being charged as no bars are added in the battery bar and the car wont switch to EV mode but when you switch off the engine and turn it on again it shows charged and battery bars have also increased and car is in EV mode.

    If any one can help me with that?
     
    #1 fahadw2000, Jul 1, 2019
  2. Dxta

    Dxta Senior Member

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    Typical sign your battery is heading south already.
     
    #2 Dxta, Jul 1, 2019
  3. fahadw2000

    fahadw2000 New Member

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    So battery replacement?
    The battery is not even used upto 100k kms. Till now it is 82000 kms. Why so early?
     
    #3 fahadw2000, Jul 1, 2019
  4. fahadw2000

    fahadw2000 New Member

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    I have checked the voltage of each cell and the voltages are good. The connections are also ok. No rust and corrosion. Battery fan also cleaned
     
    #4 fahadw2000, Jul 1, 2019
  5. bisco

    bisco cookie crumbler

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    welcome!

    how many km on her?
     
    #5 bisco, Jul 1, 2019
  6. fahadw2000

    fahadw2000 New Member

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    82000
     
    #6 fahadw2000, Jul 1, 2019
  7. Dxta

    Dxta Senior Member

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    Any lights lit on the dash? If any, get it scanned
     
    #7 Dxta, Jul 1, 2019
  8. bisco

    bisco cookie crumbler

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    wow, that is low for problems. what is the history of the car?
     
    #8 bisco, Jul 1, 2019
  9. fahadw2000

    fahadw2000 New Member

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    And also it is giving the
    It gives me the code
    P0a80 Replace hybrid battery

    The lights on dash are
    Check engine
    Hybrid triangle
    Slip indicator
    Yellow color brake indicator

    checked the battery, cleaned its connections and voltage too is good.
    Fan is clean.
    Still getting the code.
     
    #9 fahadw2000, Jul 1, 2019
  10. fahadw2000

    fahadw2000 New Member

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    Just bought the car. No work done on it.
     
    #10 fahadw2000, Jul 1, 2019
  11. Dxta

    Dxta Senior Member

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    If you have that code on, then that battery has issues.
    Get an old laptop, and download techstream software, to read the hybrid battery individual voltages real-time. If you don't have any of those, get a hybrid capable blue tooth code reader.
    Did you load tests the modules when you opened the battery?
     
    #11 Dxta, Jul 2, 2019
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  12. fahadw2000

    fahadw2000 New Member

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    Well I did load them when I was using OBD II scanner by switching on my AC and the voltage difference was about 1 Volt. However, I did not put load on it when I opened the battery.
     
    #12 fahadw2000, Jul 2, 2019
  13. Dxta

    Dxta Senior Member

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    Well, that won't give you the vital info needed on that battery.
    There's something definitely triggering the replace hybrid pack code
     
    #13 Dxta, Jul 2, 2019
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  14. fahadw2000

    fahadw2000 New Member

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    Surely but whats that thing?
    Battery seems normal
     
    #14 fahadw2000, Jul 2, 2019
  15. bisco

    bisco cookie crumbler

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    load test will show you the bad cells on tech stream. or you can try dr prius or hybrid assistant apps.

    any corrosion inside the case or connecting wires?
     
    #15 bisco, Jul 2, 2019
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  16. fahadw2000

    fahadw2000 New Member

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    Corrosion is dealt with. In a day or two I will get my techstream along with the cable and will do the testing. How to do load test on techstream? Is it done by loading the battery by turning AC Lights etc or is there any other way?
     
    #16 fahadw2000, Jul 2, 2019
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  17. TMR-JWAP

    TMR-JWAP Senior Member

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    Do you see any large areas of discoloration or the steel baseplate at the bottoms of the battery modules? What about the area in the plenum under the modules? If you do, you have a module leaking. A leaking module will still act like a good module in regard to voltage and current capability. Not so good when it comes to HV insulation resistance.
     
    #17 TMR-JWAP, Jul 2, 2019
  18. Dxta

    Dxta Senior Member

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    But I think if there's a leaking module down or under the plate, I'd expect an isolation high voltage code to pop up?
    Its the replaced battery pack code that's on
     
    #18 Dxta, Jul 2, 2019
  19. Dxta

    Dxta Senior Member

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    You can load test the modules when they are out of the casing, using car bulb, and a timer.
    Read up about hybrid battery rebuilding on the platform here. Use the search icon to navigate through em. You got to spend more to e reading there though
     
    #19 Dxta, Jul 2, 2019
  20. rjdriver

    rjdriver Active Member

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    The Dr. Prius app does a load test of sorts that gives you the expected remaining life in the battery. No need to access the battery directly. You do it from the driver's seat. The basic app is free, but the module for the remaining life test costs $8.99. Check their site to see if your OBDII module is compatible. ( priusapp.com ) The one I used cost about $10.00 at Amazon. The test takes a little more than 15 minutes while you add load with the AC, lights, etc. keeping the drain within a certain range by watching the display on your phone.

    By the way, isn't your battery still under warranty?
     
    #20 rjdriver, Jul 2, 2019
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