Best AGM 12V battery for Gen 4?

Why do you want to replace the 12V battery? Is it defective?

 

Why an agm? There is no venting issue with the battery now under the hood.
The stock battery looks like a standard lead acid design.

 

AGM? Obviously not an annual general meeting.....

 

AGM battery technology...

What is AGM Battery Technology? | NAWS

 

OK, thanks. A bit older and a bit wiser now.

 

The older Prius models all used AGM batteries. The battery was located beside the cargo area and vented to the outside.

 

Why ??
If the car is about a year old, this likely is a complete waste of money.
And if you have some solid indication that there is something wrong with the 12 V battery your warranty should cover it.

AGM is generally a better choice but there is no good reason to throw away a few years of remaining good health in the OEM one.

If you insist on doing this now........any major brand AGM should be fine.
In my opinion, the Optima ones are little or no better than the others and thus are overpriced.

 

just go with a standard lead acid car battery. they are time proven, and economical, compared to agm.

 

And the one that's in there will serve fine.

 

Didn't I read someone just today say that TOYOTA warranty on the original 12V battery is 7 years - if it's faulty, TOYOTA should fix it.

 

agreed. would like to hear more from o/p about replacing a perfectly good, almost new battery.

 

The 12 volt battery does not appear to be mentioned in the 2016 service and warranty guide, so I assume the 3 year warranty (36 month or 36K miles) applies.

 

Both the Canadian and US warranty booklets are oddly silent on the 12 volt battery, nothing in inclusions or exclusions.

I would suspect Toyota is obligated to deliver the car to you with a functioning battery in good condition, nothing more. But it should be spelled out in that document.

It is just too easy to run a battery down.

 

Let me muddy the warranty waters, it you buy a Toyota TrueStart battery at the parts counter, it has a 84 month prorated warranty. (24 month roadside assistance, 24 month 100% replacement) The same battery in your car when you purchase it, has only a 36 month warranty.

TrueStart
84-month service replacement warranty
24-month of roadside assistance reimbursement

Years 1-2 100% of parts, service and towing
Years 3-4 50% of Truestart MSRP
Years 5-7 25% of Truestart MSRP

They also sell a True-2 battery which has a much lower warranty.

 

It that for a Gen 4 battery? The battery technology in the 12 volt battery appears to be different in the Gen 4.

 

Toyota shows this interesting graphic



From Genuine OEM Car Batteries for Your Toyota

 

@JimboPalmer , that's kinda like muffler and brake pad at Honda, which often come with "lifetime" warranty. It's a calculated risk: replacements of this sort tend to happen about halfway through a vehicle's life, so lifetime warranty on genuine Honda replacement parts (typically with a proviso that they be dealership installed) keeps owners "in the fold", and with relatively low odds they'll be back another time for the same problem.

 

Partially true. Toyota has two 12 volt battery lines but their online guide does not list ones for the Prius family but directs you to call them, basically,



From https://www.toyota.com/toyota-owners-theme/pdf/03_Batteries2015_final[1].pdf

 

On another forum, here is a posting from a Toyota service writer who says 3yr/36K mile replacement warranty on the original battery.

See Dead Battery...How does Toyota Warranty Their Batteries? | Tacoma World