12 Volt for 16 Prius 2

The 12 volt battery is the same on a ll Gen 4s. The high voltage traction battery differs though.

Have you let your 12 volt battery run dead? What makes you think it needs to be replaced?

Here it is for $185 but I do not know what they charge for shipping.

2016 Toyota Prius Parts - metrotoyotapartsnow.com

 

Batteries Plus lists them

 

Not covered by warranty? I had a problem with my 12V battery - it wouldn't hold charge for more than a few days - took into the dealer and they replaced it on the spot - no questions, no charge.

 

Except Optima says their battery on that page does not fir the 2016 or 2017 Prius. I would be very wary unless the specs, including size, match exactly.

 

If a light was left on and drained the battery that is not a defect covered under warranty. That is expected behavior.

 

All Gen 4 use the same 12 volt battery anyway. That is what I would likely buy for my 2017 Two if shipping were reasonable.

 

battery should not be not out of warranty, check with another dealer. pretty sure it's 8 years, prorated after the first two.

 

I think you'll find that it's only the traction battery with 8yrs warranty

 

interesting. not true for a replacement.

 

along with a new battery, you ought to investigate cause of failure.

 

Agreed - I was thinking of asking if there is a reason why it is failing? There were some posts about this a while back.

From memory, the issues mentioned included

• car sitting idle for a long while (was it several weeks)
• car with FOB close-by
• car left for long periods in ACCESSORY MODE

What signs have you had that the battery is going to fail?

[Incidentally - your comment that it "isn't lithium" would only be relevant to the ~200+ volt Traction battery in some models.]

 

does 'well used' mean you have a large aftermarket draw like a stereo or dash cam, or does it mean you have intentionally drawn down the 12v many times when not in ready, or something else?