2013 Toyota Prius C One Won't Turn On

Wow... There sure are lots of Prius C problems this Summer! It's safe to assume that your hybrid battery is fine if it's that new and your problem is caused by a failed 12v battery and possibly damage caused by incorrectly jumpstarting that failed battery. First step, get a new 12v battery. Second step, read the error codes and check the fuses.

 

The ones sold at auto parts stores are not new, but rebuilt and in some instances the warranty policy is favorable enough to go that direction. But buying a brand new pack from the dealer means instead of a few years, you get close to a decade. So it has a lot to do with your long term plans.

 

Oops. He is talking about a new 12 V battery......NOT the HV one.

So, yes if you can find the battery in the car AND have a few simple tools, you should be able to change it yourself.....or the parts store might do it for you FREE or cheap.
Just be sure it is the same physical size and has the same kind of posts where the cables connect.

 

You can make other batteries fit in that space, and they will more or less work to let you operate the car.

They may not be as safe in the sense that they may not have the same gas venting system that the original does, and they uh... may not behave the same way in a bad crash. That's important to consider given that the battery is in the cabin and not under the hood.

Any generic 12v charger can add some charge to a Prius 12v battery. A charger meant for an AGM battery is best, but if you're just trying to get some amps in there for a quick & dirty test pretty much anything will work.

From your description, it is very likely that the 12v is hosed and the hybrid battery is fine.

 

OEM battery from Toyota is best and not all that expensive.