I had a similar experience with a 2017 prius v. The 12 volt battery was defective not the lithium one. Had to get towed out of my garage! Worked great after a new 12 volt.

Taxi drivers in NYC would often tell me about the need to replace the Prius battery after 80,000 miles.
I was under the impression that the Prius has a tiny gasoline powered motor that recharges the battery so it’s possible this could be the issue?

Others have pointed out that the problem is the small 12V battery. It can be jumped from the front of the car, under the hood, there is a positive post to clamp the jumper to which go back to the battery - this is hidden under black plastic covers (it took me a long time to find mine). I don't recommend trying to replace yourself, they are very hard to get at, sometimes having to move plastic venting that exists for the larger traction battery. The larger traction battery can fail, mine did, when this happens every light on your display will light up, like a Christmas tree.These are very expensive and it was not worth the price to replace, I just traded in the car for a used Corolla. I was not driving it enough as I was a snow bird (thus causing the 12V battery to die).

The problem is with the lead-acid battery that starts the car and the accessories—not the battery for the hybrid drive. The OP needs a new lead-acid battery. I recently went through the same thing with my hybrid Camry, although I had over 65K miles on my original battery. 25K miles seems premature to me.

One should use a charger to charge a dying battery—not by driving it.

We have a 2015 Prius (96,000miles) and the battery died in April after not driving it during the virus beginnings. Got jumped, drove every other day to keep it charged for about 10 miles. It is OK , BUT the batteries last 4 years or so. Get a new one. Why be stuck?

I believe a Prius has two separate and independent batteries. One battery is a lithium ion battery pack that is used in the hybrid power system. The other battery is a conventional car battery used for initial power and to start the cars engine. It appears that your conventional car battery is failing. Replacement of the conventional Battery should not be expensive Nora big deal.

3 years is about the max lifetime of batteries these days

I had what sounds like your experience. Have it jumped and go right to Toyota dealer..... it is the battery that starts all the hybrid batteries, it is NOT the same as a regular car battery. They know what to do, it's just expensive but after 4-5 years these tend to have to be replaced. I think it cost around $275 or thereabouts (don't quote me). good luck! I love my Prius V, it's 2015. This happened to me this spring.... at least it will run once you jump it and you can get to the dealership.

Ohiobuckeye
 

If you haven’t changed your battery since 2016 & you didn’t say if you’ve ever put a new battery in it since you’ve owned it. I’m guessing your due for a new battery, & you’ll probably pay $100.+ for a new one but being a foreign made car I bet a battery will cost you closer to $150. or more. The last battery I bought was for a Ford Fusion& it was 4 yrs. old when I bought a battery for it & it cost $134. assuming it’s the original battery, buy a new one!

Prius 12 volt battery
 

My 2018 Prius prime 12 volt battery failed at 20,000 miles at Colony cottage rec center, thankfully not out on a highway. I had AAA jump it and drove right to Pep boys to have it replaced (It was closer than Phillips Toyota). I had not realized til then that the car won't start if the lead acid battery is dead, it turns on the hybrid system. I had stupidly left the key in the car, I had the other one in my pocket. If the car detects a key in the car the engine won't power off. Dead in one hour. It is my opinion that once the 12 volt fails it should be replaced, no messing around.

I had a 2015 Prius V, and the battery did not even last a year. Phillips had to send a flatbed truck to put it on. It was hell getting it out of the garage backwards!

2012 Prius C died last weekend
 

I had a 2012 Prius C since 2014, purchased with around 50K miles. Last weekend on a trip to North Georgia the drive battery failed. Unfortunately, it happened on a Saturday evening. On Monday, dealer in Atlanta confirmed it was the drive battery. The cost to replace it - $3,500. Since the car was not worth much more than that, I elected to swap it out. The mechanic who examined the battery told me it usually failed when subjected to temperature extremes (hot-cold-hot, etc). He had not seen too many fail. He mentioned the battery located under the rear seat should be well ventilated. Mine was not. I did not know this. Most of the time, the rear seat was under blankets, umbrellas, etc. He also mentioned the newer models have vents along the side of the rear seats to help temperature control.
Not fun to be stranded in North Georgia mountains on a Saturday night. I was lucky the car was drivable. Otherwise I would still be walking home. (not really, but it wasn't fun).

Your battery under the hood needs to be replaced. Also happened to my 2016 Prius & replaced battery for $180 & all OK.

Prius battery
 

We had a 2012 Prius we traded in on a 2018 RAV4. Never had a battery problem.

The 12 volt battery is probably about a 35-45 amp hour unit. The alternator probably puts out abut 70 Amp Hr. Run the car with minimal electrical load for about 30-45 minutes.