Bad Lithium Ion Battery

You said it sat on the lot for some time. Do you know if it was plugged regularly during that time?

 

50k total miles but how many are on EV? You can check the EV Ratio screen.

It doesn't sound normal.

 

you really need to give us an actual ev driving comparison. although the ev estimate drop isn't normal, it doesn't mean your actually getting less ev distance or mpg's.

 

What do you mean by "30% loss overnight"? That implies self-discharge. Have you really compared the estimated miles just after charge complete and then hours later with the car being left OFF? If you're just referring to a drop in the estimated miles after full charge compared with earlier history, be aware of what might have changed: Have you started using the A/C? Have you recently been climbing more hills, or driving at higher speeds? These can drastically affect estimated miles.

 

To me, the acid test is actual EV miles you are getting on your commute or regular trip, do you encounter a sharp drop in actual distance of regular trip?
Mine is firing the ICE like a clock coming to a traffic light 2 km from home in one of the regular trips all year round except winter.

 

We need more information to compute......

 

To my knowledge we have had no reports of PiP lithium batts failing or being replaced. Some reports of modest loss of EV miles.

What state are you in by the way and where did you get the PiP?

 

Maybe he left the car on, overnight.

 

i suspect the o/p ran out of juice in the middle of the mojave desert. talk about range anxiety...

 

Hey guys, there were no wrecked PIPs in Auckland, NZ yet for me to test. Not Prius Plug-Ins, not Nissan Leafs.
I would be keen to test for the benefit of the common knowledge the remaining capacity of used Li batteries in those cars.
Personally very sceptical about claims of 80% remaining capacity after 10 years for Li (in Leafs) or the lifespan of the battery for the whole life of the Prius Plug-In (which in Japanese realm means 10 years).
Usually we get second hand Japanese imports 3-5-7 year old with low milage (<80000Km) in here.

Anyone can share close-up photos and dimentions of individual modules in PIP?
Photos of the assembles pack are here:
ESQ - Toyota's First Production Lithium-Ion Drive Battery

In case NZ readers are here: will buy Li battery with known age/milage from EV for testing.

 

When you say you're skeptical, you mean "they will not last that long," or "they will last much longer than that?"
The Leaf's had epic battery degradation issues, probably related to very minimal battery thermal management. I would draw ZERO conclusions from anything other than a PiP with a known usage pattern (EV ratio, mileage, age).

 

I like your attention to details. What I meant was - I am skeptical to claims from manufacturers that they will still have that much capacity after that long. Unless I test and see by myself (one of Toyota TPS principles) I would assume nothing...

 

38 months of PiP ownership here in the mid-Atlantic area... 65k miles on the odo... many multi-state road trips... daily commute of 15+ miles round-trip... continual L2 charging, often several times/day on weekends... zero actual measured mileage degradation.

I frankly learned to not even "see" the dashboard "EV Miles indicated" fantasy number because the actual odo-measured EV mileage appears to be all or 90+% about how the user drives the PiP and how the user plans their trips.

 

what is toyota's claim regarding the pip battery lifespan, does anyone have a link? i certainly don't expect it to be the same after 10 years as it was when new. of course, we all know that how you care for it and mileage will also have an affect.

 

Toyota's only statement is in the Owner's Manual. It is vague but gives TMC the ability to demur replacing the drive battery if EV mileage drops 50% (or more) over the warranty period.
That's an IF.
However, I note that none of the NiMH versions of the Prius have this warning. Perhaps TMC isn't quite as confident about LiIon technology.

 

agreed, i'm not sure what kiwi is referring to. leaf is a different matter and beast.

 

The reference you have cited describes the Lithium battery of the pre-production test model and not the battery of the production model on the roads which has (out of memory) 56 cells of 3.7V for a total of 207.2 Volts.

 

not sure about the o/p who hasn't responded to any posts.

 

If in doubt, check the source:
TIS
346 V Li-ion - model 2010
207.2 V, Li-ion - model 2012