Are Can Gen3 Prius Battery Modules be used in a Gen2 HEV Battery rebuild?

1. Yes, Gen 3 modules are compatible with the Gen 2.
2. Find a new as possible Gen 3 battery pack and swap all modules into the Gen 2 pack.

Mixing (newer) Gen 3 modules with (older) Gen 2 modules does not work.

 

Came here to also confirm that mixing Gen2 and Gen3 cells does not work.
All or nothing.

 

Sounds like it's time for another experiment.....Has anyone ACTUALLY tried putting a Gen 3 module into a Gen 2 pack and tested it or are we all just going by folklore?

Personally. I don't know that there's enough difference between the modules that the battery pack/ecu would really care.

Sounds like I may have a project for when I get home this weekend...........

Throw some suggestions out to me for how you would like to see them mixed up, what order, etc. I have about 1.5 tons of modules to choose from 2003 through 2016 manufacture dates

 

No, not folklore, it is based on mixing new higher capacity (lower IR) modules with lower capacity (higher IR) modules. Recipe for balance problems. This is by nature generalist advice, though.

[EDIT] I'm surprised you asked this, because I'm fairly sure you wouldn't make a battery to pass on by whack-a-moleing a couple or three Gen 3 modules into a failed Gen 2 pack.

However, if any one is capable of matching Gen 3 modules to work in a Gen 2 pack, you would be one of the ones who could.

 

That reasoning is true for all individual module replacements, not just putting a gen 3 into a gen 2 pack. I can guarantee there are plenty of 2010 gen 3 modules of similar capacity to 2009 Gen 2. To me, the question is "are they compatible?". We make it sound like any gen 3 mod in a gen 2 pack is going to immediately trigger the triangle. I don't think that's true. I'll look through my notes and find some various years to do half the blocks in gen 2 and half in gen 3, different years but all similar capacity. Install it in my 2007, and do some testing. Maybe something interesting will show up.

I still have one of the test batteries (battery 'P') from an earlier customer swap where I installed one module off the rack with no matching. I'll take that same pack and install a 2014 module in its place. (I have 6 2014 mods on my bench right now from another project). No matching will be performed. Just straight up pop it in there and see how it tests.

 

Like I said, you have the equipment, skill and knowledge to test and make those judgements.

My advice was generalist and you will notice I gave the advice to get a Gen 3 pack that was as new as possible. I did not have in mind a 2010 pack, more like 2014 0r 2015.

Where your testing could be invaluable is, do the changes made to improve the Gen 3 modules have any bearing on how well they play with Gen 2 modules. As far as I know, no-one has answered that question.

 

That's what I'm curious about also. We hear a lot about how module improvements have been made from gen to gen, but honestly, I just haven't seen that 'ah-ha!!' difference. Maybe having them all together in one battery assembly will help to see something. The never ending list of experiments strikes again...

 

If you take all the cells from the same pack that was working good and hasn’t sit long time with no use you don’t need to. But older the modules and longer they have sit it becomes more beneficial to recondition/balance them.

 

A better DIY option, IMHO is @2k1Toaster 's kit of new cells. You basically end up with a new pack and a 2 year 25K mile warranty for $1600 shipped, assuming you are in the continental US. That is hard to beat!
Details in my signature.

 

To bad we weren't closer.

Posted via the PriusChat mobile app.

 

Has anyone put a 4 generation HV battery in a generation 3? It's possible?

Posted via the PriusChat mobile app.

 

Some have put a Gen 4 Prius Two battery modiules into a Gen 2 Prius casing.
The Gen 4 Prius 2 (not 2 Eco) & , I think, the 1 have an improved NiMH battery. The other trims, & the Prime, have Li-Ion batteries so they would not work,

EDIT: I am referring to US Trim models here. I do not know about Gen 4 Prius in Costa Rica.

 

I'm still waiting for someone to smoke test putting a Gen4 lithium battery into a Gen2/Gen3 car. Could work if they didn't change the battery ECU protocol...

 

Why bother putting lithium in where it does not belong?
You want lithium? Buy a lithium car.

There are many protocols, software, and hardware that are different between the Nimh and lithoum versions. Not worth the effort.

 

There will come a time when there is a better supply of lithium batteries than good NIMH. It will be another 5+ years before any current lithium battery Prius will need replacement. So replacing Prius NiMH batteries with Prius lithium is going to look good if it works.

One of the functions of the battery ECU is to insulate the rest of the car from whatever battery chemistry is being used.