Warranty on battery cell?

It might, have you ran the VIN online or at a dealership?

The $700 install is a little excessive, curious what their posted shop rate is and if they're tacking on hazard pay or not.

Pretty sure WA is a 8/100 state.

 

I believe that WA became a CARB state sometime after 2007 so your car may only have 8 yrs/100,000 mi warranty.

However, if you have been a loyal Toyota customer who has had their car serviced at a Toyota dealer, you may be able to appeal to Toyota Corporate for a goodwill warranty assistance. This may give you anything from a discount to full cover.

Toyota Owners Official Web Site

Create an account then add your car's VIN.

 

Registration

HV Battery Goodwill Warranty Listing - Toyota Prius USA | PriusChat

 

The 2014 list of CARB States in the US | PriusChat

Washington did not adopt any CARB provisions until 2009, when they did, it did not include 10/150,000. it is an 8/100,000 state

 

if you can't get goodwill help, shop around dealers, pricing is not fixed, but $3,200. is probably average.
also, you can get a rebuilt battery for less, but they are iffy, and it depends on how long you want to keep the car, and how much aggravation you want to put up with.

 

Yes to the above. If you are planning on spending around $3200 (on a new battery) look into having it replaced at a dealer who offers a three (3) year warranty, whereas the local mechanic might only offer you one (1) year for the same cost.

Another option is taking one for the team and getting a NEW battery from Toyota Prius Hybrid Battery | Bumblebee Batteries for $2400 (Portland no tax!!, local pickup or $125 shipping which includes core return) and have your current mechanic install or look for a less expensive installation option (there must one, maybe try a Bumblebee authorized partner service center by calling 1-888-968-5005 or Contact - Bumblebee Batteries ).

You would get a three (3) warranty on the above NEW battery, and potentially save money while supporting a quality small business