Help for selecting correct 12V battery

It looks like the Bosch battery may have the terminals in the opposite positions, assuming the red cap is positive. I can't tell much from the photo of the Sznajder, but the case (handle and vent tube hole) look more like the Toyota battery. I can't read whether either is an AGM (aerated glass mat) battery, to meet the Toyota specification for a battery in the passenger cabin.

 

welcome! in the u.s. there are 3 different batteries. gen 2, 2004 -9, sks (larger) and non sks. gen 3 2010 - 15, just the larger one. gen 4, 2016, a whole different battery under the bonnet. exide unavailable there?

 

It would be best for you to refer to the physical dimensions of the original equipment battery. That is usually GS Yuasa, S46B24R. Alternatively, the smaller 12V battery is S34B20R.

The GS Yuasa English-language catalog can be found here: http://www.gs-yuasa.com/en/products/pdf/Automotive-MadeinJapan.pdf

The S46B24R case dimensions are 238 mm length x 128 mm width x 202 mm height. The terminal height is 227 mm. The electrical rating is 45 Ah and 325 CCA. The "R" means that the positive terminal of the battery is on the left side, when the battery is positioned so that the case terminals are closest to you. The S34B20R has a 197 mm length and the other dimensions are similar to S46B24R. It is rated at 35 Ah and 272 CCA.

The terminal polarity orientation is important to observe. You do not want a battery with reversed polarity because you would need to install the battery with the terminals adjacent to the fender, a safety issue in the event of an accident hitting that fender.

In North America, that S46B24R battery is used for the Smart Entry/Smart Start equipped Prius. Lower level Prius without that system are equipped with S34B20R.

In Finland, with the cold winter climate, your Prius vehicles may have S46B24R as standard equipment. I suggest you find the battery and measure its length to be sure.

 

I don’t think they are that rare here.

I think all Priuses here (unless you have grey import model without smart key) do have the bigger battery.

Only two batteries that I could easily get here maybe year ago were Bosch and Toyota battery from dealer. Bosch battery was S4 something. It has exactly the correct dimensions (and terminals and polarity) but it needs adaptor for vent tube and plug for the other vent hole (adaptor and plug are just the most common type). Bosch battery is not good at charging up when it’s cold (maybe colder than -18c or 0F) so if you park your Prius outside and don’t drive much in winter I think you shouldn’t get one. And Bosch battery is not AGM. I would just get the dealer one.

For some reason many catalogs somehow get the polarity wrong on Prius battery. And battery will fit in and bolt on nice but you do have reverse polarity that will cause very bad damage.

 

congrats!

 

Hi can you pass me the battery store name . I have the same issue. Me too from finland.