johnHRP's Recent Activity

  1. johnHRP attached a file to the thread 12V Battery Replacement Recommendation.

    A 6th-grade kid understands easily from the diagram. Car body as the ground is steel, not copper. The resistivity from the rear to...

    Prius12V.PNG Jan 18, 2022 at 3:27 AM
  2. johnHRP attached a file to the thread 12V Battery Replacement Recommendation.

    The negative battery is connected to the ground via the rear body panel on the back of the car. The rest of the negative terminals that...

    WhyNotFromJumperPort.png Jan 17, 2022 at 4:54 PM
  3. johnHRP replied to the thread Sluggish acceleration during Hybrid Battery in Charging Stage?.

    It depends on how much your throttle is. At close to full throttle, it will be all to the wheel but at low and partial throttle, it...

    Jan 16, 2022 at 12:29 PM
  4. johnHRP replied to the thread How to charge a HV battery?.

    It has been 2 years, how was it? Check hybrid system often caused by dirty intake air cooler for the battery. Toyota suggested on the...

    Jan 16, 2022 at 12:24 PM
  5. johnHRP liked PRIA 2012's post in the thread 12V Battery Replacement Recommendation.

    2012 Prius two with original battery. Toyota stealership wanted $280 here in Bend OR. Got the premium NAPA battery online and picked up...

    Jan 16, 2022 at 10:50 AM
  6. johnHRP replied to the thread 12V Battery Replacement Recommendation.

    I show a basic electronics serial circuit. In the serial circuit, all parts gain the same current. Power (watts) = Current x current...

    Jan 16, 2022 at 10:41 AM
  7. johnHRP replied to the thread 12V Battery Replacement Recommendation.

    Thanks for the advice. Yes, I agree, the variance is too large to make any conclusion on 12v AGM battery behaviour. It is exactly 6...

    Jan 16, 2022 at 3:34 AM
  8. johnHRP replied to the thread 12V Battery Replacement Recommendation.

    My old 06 Prius had a sudden plain flat battery without warning either. That's why I start monitoring my battery these days because it...

    Jan 15, 2022 at 4:40 PM
  9. johnHRP liked benagi's post in the thread 12 volt battery charging voltage when fully charged?.

    Little off subject but a good story and ending. I took my wife’s Prius v in for service while she was out of town. When I got home and...

    Jan 15, 2022 at 2:53 AM
  10. johnHRP liked Kevin_Denver's post in the thread What are the allowable voltage levels for the 12v aux bat?.

    I agree with what others have posted: for any weird electrical problems with the Prius, the first thing is to check the 12V battery. If...

    Jan 15, 2022 at 2:40 AM
  11. johnHRP replied to the thread 12V Battery Replacement Recommendation.

    Exactly, that's why we get CEL in hybrid at any time it drop below 10V even just a split of second dip, not just slow starting or dim...

    Jan 15, 2022 at 2:37 AM
  12. johnHRP replied to the thread 12V Battery Replacement Recommendation.

    Toyota Prius: How to Check the 12v Auxiliary Battery Health - PriusDIY.com Easiest check that also works for 3rd gen. The bottom limit...

    Jan 14, 2022 at 3:05 AM
  13. johnHRP replied to the thread 12V Battery Replacement Recommendation.

    Yes, it was like that since 2 years ago in winter. Nothing much change. After i parked for about 5 days, it is 12.3V from the fuse box....

    Jan 13, 2022 at 3:11 PM
  14. johnHRP replied to the thread What is the hourly fuel consumption for a Toyota Prius at idle?.

    That's one of the reasons why all Mazda3 and Hyundai Elantra i30 all are mild hybrid these days with 50V Lithium battery. Not stupid...

    Jan 13, 2022 at 7:47 AM
  15. johnHRP replied to the thread 12V Battery Replacement Recommendation.

    It is still close to 12.6V after a long trip. 12.3 V is only after many short trips or parks for many days. The fully charged open...

    Jan 13, 2022 at 4:29 AM