Gen3 HV batteries for Gen2?

Thanks for pointing me to your thread. I'm glad your Gen3 modules are still working in your 2004 Gen2. It really gives me a little more hope that mine will be successful, too.
I'm installing the newer modules into my older HV battery tomorrow. Starting to feel a little better about everything, now.
John

 

How does one determine whether a module is gen2 or gen3?

Aren't they both the same part number? (Primearth NP2)

-EB

 

gen 3 modules will have a B3, B4, or B5 below the serial number. B3's are typically older 2010-2011. New packs from Toyota have been coming with B4 and sometimes B5 (sometimes a mix of both)

 

gen 2 modules can be B2 or just a plain serial number

 

B2's came out on some 2007 models and 2007 Camry

 

Thanks for that info!

So am I correct in stating the following?

1. Both gen2 and gen3 Prius modules are part number NP2
2. The version can be (none) or it can be B2, B3, B4, B5
3. B2 (or no version label) is used in original factory gen2 HV battery packs (model years 2004-2009)
4. Versions B3, B4, B5 are used in original factory gen3 HV battery packs (model years 2010 to present)

Is it possible to decode the exact date the module was manufactured from any of the barcodes or other data which is printed on the modules?

Has anyone actually tested combining older (B2 or no version)) modules with newer (B3,B4,B5) inside the same HV battery?

I'm wondering if the functional differences between the different versions are small enough to be insignificant?

Numerous posts on priuschat state that: "gen3 modules can ONLY be used in a gen2 car IF all 28 modules are gen3" I wonder if the reason for this is simply that combining a 10 year old module with a 1 year old module makes it unlikely that the modules could balance closely enough to work in the same HV battery pack?

-EB

 

JeffD recommends against a mix and match because of different module resistances between the generations. I believe him, but then I am a diploma snob and am influenced by his his being a Prof of EE.

 

I have a Master's degree in Electrical Engineering. But I've never taught it. I don't have enough patience to do that. -EB

 

B3 B4 and B5 modules were also used in gen 2 new replacement packs from Toyota

I believe that the newer modules have a lower series resistance and shouldn't be mixed. I have also heard (but have never tried) that you could mix 14 and 14 of different modules putting one of each in a block.

 

It's about 5 months out and the car is still running perfectly. The batteries were from a Prius V - the pack looked very similar to the Gen 2 (which is a 2007).

 

A) Professor JeffD unfortunately have not provided any evidence of the source of his "statement" about internal resistance to be different in NP2 used in Gen2 vs NP2 used in Gen3. You may take that statement as an "educated guess" I guess .
B) Mixing any modules from any generation without ability to run test which show how all of them 28 perform simultaneously is pointless
D) Reading QR code is easy and that will give you a manufacture date - what if that was 1 year old module from Taxi which made 300000 miles? How important to know the age...?

 

One can endlessly discuss the manufacture date of the battery modules but if you do not have the right methodology and tools to test the outcome of the battery rebuild - you are in the dark.

My tools recently came to another state in USA and to Australia.

Those folks are Real Entrepreneurs. They had guts to come all way to New Zealand for hands-on experience and they are very devoted to provide their clients with the high quality rebuilds. I've heard their success stories - they had to work really hard to succeed in what they do now. I admire their entrepreneurial spirit.

The feedback which came from Europe yesterday (they specialise on Lexus - FYI - 40 modules - is much harder to rebuild than 28 module pack in Prius) proved that my Technology, Standard Operating Procedure (SOP) and especially URC (Usable Remaining Capacity, pronounced "you're see-ee"...) which I have introduced Internationally as the major metric to be captured and used for successful rebuilds is the right methodology that provides measurable and sustainable results.

Procrastinators are left behind with voltmeters, RC cycle chargers and guess work.

Play safe.

 

DAY 1 Testing

First post. Been reading for a week. That battery thread is insane with all the info that is in there. Man that was a long read. Anyway.... the triangle of death reared it's ugly head last week. I got a reader and it said hybrid battery. Oh snap!..I purchased my 2005 about year and a half ago and it's been running strong ever since. Anyway...back to the triangle. I went ahead and got two cells of ebay (gen 2) and figured I'd find the bad cell and swap it out. From what I saw on the battery thread....good chance it would probably be 2 cells. This was last tuesday. When I opened up the case today....all my batts read 8.0v +/- .01. The culprit read 6.7v AHA!! So it turned out to be only one.

Now, in the process of doing all this. ....I saw the light (his thread) on Gen 3 batts in a gen two car right in the middle of this past week.. MUHAHAHAHAHA!!! I've been an electronic tech for over 20 years, so I decided to man up and go for it instead of just popping in some cells in my battery that has over 150K. As luck would have it I found a local guy off of ebay who had a pack from a 2012 with 30k that the car was wrecked and lost. The battery pack had been sitting at his work place for a couple of months and he wanted to get rid of it. I made him an offer and asked if I could check the batteries before I purchased them since it was sitting for a couple of months. I checked all the batteries and they were all 7.5 +/- .01. Thanks for youtube...I disassembled the interior in about 1/2 hour and took the battery out . I took both batteries apart and swapped cells. I put the gen III back in the car and it fired right up. No codes , no triangle. Now....yes I did it dirty style and didn't do the load and conditioning test, but i figured if all the batteries were that close and it was a 2012 car...there was no need two. Fingers crossed! So now I gotta figure what I'm going to do with my old cells. I'm thinking of keeping ithem, but then again they are second gen batteries and I now have gen III batts in my car, so I can't use them. I'll probably load and resistance test them , knock them down to 7.5 and throw them up individually on ebay. I'm going to take a long ride this afternnon.....so I'll probably post back in a week and let you kids know the progress..
cheers...

 

Hi jquest,

thanks for nice post, hope the repair will last for another 7 years as the previous battery did. What about the consumption? Gen3 batteries have larger capacity and are newer, so I think that there should be some progress also.

 

Glad it's working out so far


iPhone ?

 

DAy 8 Testing
Been running the car around now for a week. Everyone in my houses uses it. My wife and daughter on the weekdays and then I motor around on the weekends in it. So far so good. No issues. Looks like I've improved approximately 3 mpg's. Probably a little less. Damn wife thinks she has a Hemi under the engine. I could also have better mpg's, but my car has Michelin premieres on it. I chose traction over easy rollers cause in S. FLa we have a lot of rain. Anyway....car is running great.

 

I just bought 11 cells from eBay that are/were supposed to be from a 2015 with 9k and all the modules have only a serial number...no B2s, B3s, B4s or B5s.

Did I just get ripped off, or is it possible that they still are from a 2015 Prius?

I did a QR code scan one one and it comes up with this number: 229PLA06158F

No info on that number when I google, unless there is a specific site to go to or something to check Panasonic cells date of manufacture etc??

 

229PLA06098F
229PLA06100F
229PLA06103F
229PLA06107F
229PLA06110F
229PLA06112F
229PLA06113F
229PLA06128F
229PLA06132F
229PLA06157F
229PLA06158F