Prius PRIME 12 V battery size

Same as 4th gen Prius? There's some threads here. @Elektroingenieur is very in-the-know.

 

prime batteries are an issue. you may have gotten one of the bad ones.
otoh, the dash cam may be a role, don't killl the next battery with it.
@Prodigyplace is one of the experts iirc

 

Yuppers

 

Your battery is a Yuasa, 45 Ah, 295 Amp battery, made in Japan. In the USA Yuasa only sells motorcycle, snowmobile, etc. batteries, not car batteries. I would recommend that you check with Costco or a similar store for a battery that will fit the Prime and match those specifications. The reason I say that is that I expect the dealer to try to charge you at least twice as much for an OEM battery than buying one outside. And since the OEM one only lasted two years there is no obvious advantage to stick with a Toyota one. Incidentally, the last two batteries I have bought from Costco have lasted twelve and ten years (99 Tacoma and 00 Lexus).

 

See my January 5 posting; the size is called LN 1, H4, or 140R, and the originally-installed type is an ordinary “maintenance free,” flooded lead-acid battery, not an AGM battery like those in older Prius cars.

Especially now that East Penn is making them, this size is available in many U.S. and Canadian auto parts stores at reasonable prices. Some cross-reference sources haven’t been updated, however, to list such batteries as compatible with fourth-generation Prius and Prius Prime cars.

If you replace your car’s battery, and you’re happy with the replacement, you could do everyone a favor by sharing photos of the old and new batteries, as @KeanuMok kindly did in this posting.

Those are the main electrical specifications, but I’m not sure it’s always a GS Yuasa battery from Japan. The original battery in mine (seen here), for example, is marked with “20HR 45Ah CCA 295A(EN),” a manufacturing part number (28800-37140), and a long list of Toyota distributors, but not with a manufacturer name or country of origin.

Even if you liked the original battery, you wouldn’t necessarily get an identical one at a dealer: the batteries sold as service parts at Toyota dealers in the U.S. have different part numbers and often come from different sources than those originally installed in the assembly plants.

 

brutal. what dealer should we stay away from?

you're not the only prime owner posting lack of dealer availability for prime 12v, i don't get it. they've been out for 2 years or more?

 

Toyota is having enough of an issue getting those batteries that Toyota USA manually canceled my dealer's order for one to repair my car and told me directly that they won't allow a replacement until after it's died on me and I have to have the car towed to the dealership.

 

At which time a trip to Plano may be in order.

 

I wouldn't expect Plano to tell me something different in person than they did via telephone.

 

Consider a standalone 12v portable battery pack to run your dash camera while your Prime is parked, thus no drain on the Primes main battery. Then when you start up your Prime the 12v portable battery pack will automatically get re-charged by the car.

http://www.amazon.com/gp/product/B00ME3ZH7C/ref=ox_sc_act_title_1?smid=A24OIV2F0TL1K3&psc=1


Rob43

 

But then you could toss the 12-volt that stranded you through their window.

If batteries are available from other suppliers, Toyota USA should be using them instead of telling customers they have to go through the large inconvenience of getting stranded and towed in order to get the OEM replacement for a known bad part.

 

I cannot understand how they can have supply problems for this long. It's a 12V battery FFS. How can it be an issue for months on end across North America? I can't make myself believe a veteran car company like Toyota turned amateur hour as soon as they got a bad batch of parts. Something larger is going on. Is the short supply of Primes connected in some way? My curiosity will be piqued if the 2019 has a different design for the 12V system.

 

When fourth gen first came out, with 12 volt battery in engine compartment, I thought yeah, troubles are over..

 

yup

 

I found a "possible" name brand 12v replacement battery, I'll take some measurements of my Primes battery & go see this
possible replacement battery at my local store a little later today...

If this name brand battery fits, it will cost less than $79 dollars at this nationally operated big box store.

Edit: Found another "possible" name brand battery at ~$120.

Rob43