Load test results, cell replacement, only 1 bad cell module?!

$1625
Battery - Toyota (G9510-47031) | Toyota Parts

 

Yes. No. Maybe so. As of right now, that price is sort of a unicorn; often heard and spoke of but rarely seen.

YMMV.

 

@Totally I'm glad I saw the other identical post in the newbie forum and didn't have to wade through this one first.
Even though I think double posting is an opa faux pas in most forums these days

I made a few suggestions in newbie section thread
Load test results are in.. | PriusChat ​

I just realized you're not charging individual modules, only discharging them.
As I was going to ask what kind of charger you were using on the modules.

 

I second that. This member seems to be able to leap to extraordinary conclusion based on not much. Then he is worse than a dog with a bone.

I do not believe that the outcome was because of the failure to follow this recommendation. I believe the battery failed just because a module, that was on the edge anyway, went south. Is there a relationship to using the Prolong system? More than likely. But, I believe the module would have failed anyway, after all the HV battery was exhibiting signs already which prompted the acquisition and use of the Prolong system. The positive of all this, is the failure happened in control conditions and so no stranding while in the most inconvenient time/place occurred. The battery was replaced in accordance with the pre-planned course of action (Plan-A).

I am getting a little tired of this single event being dramatised by just a couple of members ad nauseam, as must the member concerned.

If you knew anything about Hybrid Automotives, you would know they have a wealth of experience with hybrid batteries and have had many system in use long before the (relatively new) Prolong system for the Prius. This poster really needs to get a life. I don't know why he has such a chip on his shoulder, but it is tiresome.

As above, that is debatable, for the reasons already explained. And if it was so, so what? It was inevitable that it would have happened eventually in service anyway.

 

So there you have it. dolj says that the Prolong system doesn't do much, if anything, to "prolong" the life a battery with an iffy cell. Best plan (aka Plan A) is to buy an all-new battery pack and skip the $800 Prolong + used cell wack-a-mole "fun".

So dolj please do share with us your data using your Prolong system.

 

It's going to take time to learn what is going on with the pack and the modules.
Pack balancing has been shown in several communities to be 3 or 4 times more successful
than module based refurbishing.
But, it's not always successful,
as it can't fix everything that can go wrong with a set of modules.

Don't let the naysayer(s) who promote the dealers "we sell cars" $ attitude deter you from learning
how to maintain your vehicle.
Vehicle maintenance has been done by us backyard mechanics for as long as cars have been made.
It is possible to learn the hybrid system operation and maintenance.
Further, matching your results with others that have done it before flattens the learning curve considerably.

Predicting HV health by delta V and discharge curve | PriusChat
really advance theory that one guy Predicting HV health by delta V and discharge curve | PriusChat
is trying to help another understand.
There's always more to learn if you want to know.

 

opps wrong thread

 

So there you have it. kenoarto displays his incredible powers of deduction to yet again come up with a farcical conclusion.

At least on this, I am in agreement that the best plan is to buy an all new battery pack (although, in this case, this wasn't Plan A), however personal circumstances may dictate an alternate plan from the best option. It doesn't follow that using the Prolong system is a waste of money and time. In addition, if conditioning is started sooner rather than when problems are imminent, there is no need to whack-a- mole.

You are free to believe whatever you want in regards to battery conditioning, but that does not give you the right to be so rude and obnoxious to the users of the system.

I do not believe you have any double-blind testing to back your viewpoint, but if you do, we are all ears.

 

1) You previously stated that conditioning doesn't work with a failing cell.
2) You just added "if conditioning is started sooner rather than when problems are imminent, there is no need to whack-a- mole."
So when EXACTLY do you think conditioning should begin? With the purchase of a new car? 5 years? 10? And how much longer are you sure that will batteries last using charging systems vs using no charging?

We all know that all Prius batteries will eventually die, but no one knows when. Cars in the heat of the south seem to have shorter lives. Charging systems sounded good in theory, but their efficacy appears to be minimal. Thus, all consumers should be warned about spending $700 on these snazzy looking devices, when full new pack replacement almost always follows. That is bad news for some, but it not an insult. I suppose you think that adding personal insults is OK, because this is the internet where being a know-it-all and crude hyperbole outranks common sense and civil discourse.

 

I welcome common sense and civil discourse.

Rants, not so much.

 

So dolj,
1) When EXACTLY do you think battery conditioning should begin? With the purchase of a new car? 4 years? 8 years?
2) How much longer do you predict batteries will last if using charging systems?

 

Have you reassembled the pack yet? If not, be sure to apply the recommended torque on the 56 nuts that fasten the bus bars to the modules.

Be conservative when using the Prolong system initially. Don't go to the lowest voltage level during the first discharge cycle. You might kill more modules that way due to voltage reversal of the weakest of the six cells in a module.

 

Aren't you aware that horse you've been relentlessly beating is already dead? Time for you to move on.

 

Waiting for answers. Data. Facts.

 

Ya that sure is a lot of money, but I think it is intended to insure a return for proper recycling. Good thing that it is fully refunded by Toyota.
Here's a second dealer at $1625:
Battery - Toyota (G9510-47031) | Boch Toyota South