Toyota OEM 12V replacement Battery

The pictures of the batteries shows standard type filler caps. These picture could be generic but it does seem to to point to the fact that they are not AGM batteries particularly when taking into account the non listing of a Prius battery and even in the detailed cutaway picture and description there is no mention of it being an AGM, there is also no mention of or showing of valves for venting regulation.

If the battery was suitable for the Prius, why do they not list it as such? If you thinking about buying one of these from your dealer just ask can it be topped up, if the answer is yes it is not an AGM. I am not saying the battery will not work "it will" but there are other implications.

John (Britprius)

 

One other thing to ask is can this battery be turned on it's side or even upside down safely and operate normally without leakage? Again if the answer is no it is not an AGM battery. The OEM battery is capable of this.

John (Britprius)

 

Would the presence or absence of a vent tube on the battery be a simple indicator of the appropriateness of the battery for the Prius application?

 

The JIS46B24R is the original Prius battery part. I believe not made by Truestart.

John (Britprius)

 

The vent tube is a requirement to stop the possibility of the battery gasses entering the passenger cabin, but many flooded lead acid batteries have vents fitted. So the complete answer is no.

John (Britprius)

 

If the battery is a VRLA AGM the top of the battery will be flat and sealed with no filler caps it will have a vent tube fitted usually on the positive end of the battery.

John (Britprius)

 

Stands for "Battery Council International" usually relates to battery size designation used in the US. Not I believe in Japan.

John (Britprius)

 

Should have added JIS stands for Japanese Industrial Standard.
The JIS46B24R being a JIS designation for a 45 AH 12volt VRLA AGM battery. See post 91 in fitting an AGM mobility battery.

John (Britprius)

 

For the record, the battery that mosesk and myself own is exactly as you describe.

If you would like, I can post a picture of said "True Start Battery".

It is the same battery that I purchased back in January of this year.

It has no filler caps, and it does have the vent tube fitted on the positive end of the battery. I have no doubt whatsoever that it is a AGM type battery and is a correct OEM replacement for the original Yuasa battery that was fitted at the factory.

 

To answer this question, the answer is you can rotate this battery any which way you want. It is a completely sealed battery. Attached are photo's of the battery in question. It is already fitted, however it is pretty clear that the battery pictured is indeed a sealed AGM "vented" battery.



I do regret not taking photo's of the battery before I installed it. Patrick Wong asked me for photo's, however I had already installed the battery before making the post about it.

The first pic shows the top side and you can also see the vent tube. The part # S46B24R is partially obscured by the hold down clamp.

The second pic shows the rest of the part # (JIS) and a view of the negative terminal along with a clear view of the top of the battery. Note that there are NO filler caps on this battery.

The third pic plainly shows the vent tube attached to the battery. The location of the vent is on the positive terminal end.

The part # that Toyota list's this battery is as follows. 00544-21171-325

 

FYI just today I was quoted $333.00 to replace the 12V battery in my '07! Thanks for the info, I'll do it myself, thanks. He said it was a 'special Prius AGM battery'...

 

That battery does indeed look much the the same as the OEM battery. Can you remember if it had True start on the side or was it just blank as it appears in the picture as I am thinking it is an OEM battery rather than a True Start. The number in your picture shows as B24JIS without the "S46" prefix but I agree it does look as though it is an AGM battery. However I am still a little concerned about the non listing for the Prius.

Maybe Monius will at some point enter the discussion with his book on battery types and construction.

John (Britprius)

 

The side that is facing the brake backup power supply is blank. I can't see the other side of the battery since it is fitted in the car and honestly don't want to disturb it at this time.

Concerning the non listing you are referring to. It is my opinion that a lot of the information found on the internet is not always complete and correct. A perfect example of that is the so called generic photo that seemed to cause a stir in this string, compounded by the fact that they don't list the classic battery. What really matters to me is the end product and how it functions. I think you will agree with that aspect. Just as you are pleased with your choice of battery for the Prius you run, I too am pleased with the choice made on this end.

EDIT: In reference to your point about the part # not showing the "S46" prefix, I think you simply overlooked it. It is very plain if you look at it closely. You can see the number plainly on the upper right hand side to the right of the hold down strap, and you can also see the S just to the left of the strap that hold's the battery down. Now if you look at the upper right hand corner, then yes you will see the JIS there.



I too would welcome Monius input since he was one to also recommend the OEM battery which is what mosesk and myself have installed.