PIP Battery Replacement Cost

don't carmakers have to supply parts for 7 years after discontinuing a model?

 

I've heard that too. But technically they could discontinue the whole pack as long as you could still order the parts to fix it...even if it costs you more.


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There are contracts that suppliers of the auto makers sign and there are clauses such as length of time after model completes that materials are to be supplied.

When a previous employer of mine supplied Toyota, it was 7 years after last manufacture of the model year. But this was 5 years ago, so things may have changed. I know we were huge fans of keeping inventory around for 7 years or ordering much smaller quantities to make the materials .

 

Okay here's the measurements of my battery within about 5 mins of completing a full charge. Apparently the pack is made up of 8 blocks of 8 cells






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looks good!

 

I guess I don't have anything to worry about then, until I get a catastrophic failure i.e. drastic reduction in performance


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What is the Voltage spec?
And what is this cool Snap-on tool? Is it just ODB-II, or does it connect to something else?

 

Drash said fully charged and engine on it would be about 212-214V for the entire pack. I did my test in "key on engine off" mode as we call it in the auto industry. For the Prius this means double tap the Start button, no touching the brake pedal, you get all the warning lights.

The Snap-On scanner is called the Solus Edge and I use it for off-brand vehicles at work. Yes it's OBD-II. I'm not sure if something like a ScanGauge could be made to read battery voltage. Hell, I wasn't sure if my tool would read it but I guess it does.

It's also handy for programming tire sensors, clearing codes when you messed up and powered the car on with something unhooked, and for recalibration the steering sensor after a wheel alignment.


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Max cell voltage is 4.15V, so it's probably 7 cells per module. The cell voltage will never see the full 4.15V because it'll never be charged to 100%. I looked at my ODB II right after charging and before I put it into HV the battery read 219. Once I was in HV mode the battery dropped to 212. So your battery looks pretty good.

 

Oh okay. I just assumed 3.7v per li-ion cell. I guess these are different. But thanks, I'm glad nothing is broken right now.


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ScanGauge II can be programmed to read out individual battery block voltages, or total pack voltage. I've got it working on mine. If you get an OBDII LE Bluetooth or WiFi module, you can use Torque on Android, or EngineLink on iOS, to read out all of that as well. Both of those apps come with all of the PIDs programmed to read out battery block voltages, resistance, pack temp, mg1/mg2 rpms, mg1/mg2 torque being produced, amperage in/out of the battery, etc.

 

My ScanGauge II has reported pack voltage of over 225 volts when going down hill and under heavy regen braking. I've also seen it bottom out at 182 volts while going uphill right before the EV portion of the pack got depleted (SOC dropped to 23.1%).

 

Yep I have a database of several hundred trips of OBD II data. I've seen a lot of variation between trips in charged and discharged SOC and battery voltage. More so on the high end than the low end. I usually end up in my garage with about the same 25.1% SOC from an empty battery because I'm coasting from 55 mph to my house, but during operation, oh yeah it can drop even more.


Unsupervised!

 

I think the max Toyota allow is 4.15v per cell for longevity similar cells are often charged to 4.25v in other applications has anyone measured the final voltage during charging? Should 232.4 v if the charger takes it up that far but I am guessing they would leave some headroom.