Is there a way to determine if HV battery is the original?

Have you run the VIN at a Toyota dealer to learn what repair history is in their records?

-Chap

 

Run you're VIN through the Toyota owners website (www.toyota.com/owners) (you will have to register). If the battery was replaced at ANY Toyota dealer, it will show up there. If it was replaced by an independent shop or an individual, good luck finding out.

I saw a post by Avi (an independent shop) and he said an original battery will have one sticker on top and a replacement will have three. I have not independently verified this but, he has been very trustworthy.

 

New replacement batteries from the dealer do have 3 large decals on the metal top cover. (Both Gen1 and Gen2 batteries). However, installers don't always change the top cover since the old one will work just as well. I've also seen a "3 decal" cover on a bad battery being sold as good so buyer beware. Ideally you can look at the datecode on the slices inside the battery module. Anyone got a link to the datecode format Toyota uses?

 

Well, I''m glad that helped. Now you know you have a fairly new battery and transmission (lucky you).

That's too bad about the tranny fluid in the inverter loop. You really do need to get all of that out of that loop. The bad thing is that water will not get it all out. Since tranny fluid is an oil, it will not mix w/ water. I really don't have a procedure for you but common sense tells me you could use Dawn to get the oil out and then flush with water. What a mess!!!!!!!

That's probably the reason your inverter pump went bad (trying to pump oil instead of water).

I don't know what you're experience will be with the '01 Prius but mine has been fabulous. I hope you have the same positive experience with yours. I was just thinking yesterday that in reality, there aren't many improvements between the Gen I and Gen III. Good luck with the car.

 

datecode is in this forum somewhere. At least for the pack. And I thought the modules have a number.

 

The modules can be moved to a different pack so the serial number on the sheetmetal is not definitive, but can certainly help.

To know the true age of the battery you'll need to decode the data on the modules (I call them slices) themselves.


Notice 3 large decals on top cover. This is how new batteries come from the dealer.


Model/serial number plate on sheetmetal.


"new" pack from dealer purchased November 2012 (what's under the cover)


"new" slices from dealer battery purchased November 2012

Here's an interesting factoid for those of you that don't know, those 2 dimensional QR codes you now see everywhere where invented by Denso (Toyota subsidiary) in 1994 for use in manufacturing. Then Denso basically shared the QR code standard in the public domain so now everyone uses them without paying license fees. Pretty cool Toyota!
QR code - Wikipedia, the free encyclopedia

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How do you decode the slices to know the age?

 

Here is the guide for determine the age of the modules. (I'm now using standard term "modules" instead of of "slices")

The 4th digit of the module serial number tells you the year of manufacture.

After 2015 the letters go sequentially. i.e. R=2016, S=2017, T=2018, U=2019 etc.

 

Is there a way to track down the number (a serial number) of the OEM HV battery originally fitted in to the prius. Does Toyota disclose any such data /

 

Nope. There are no VINs or serial numbers that tie the battery back to the car, at least that the public has access to. Maybe Toyota corporate has a way to tell but I've been told they don't. The best you can do is remove the battery cover and look at the date codes on the modules, which would be a PITA if you're just evaluating a used car etc.

 

i have serial number " 119R6S09533Y " on HV battery . how old is pls ( Toyota AURIS 2013 )

 

Answered in the other thread in which you posted.