Lithium or sodium for replacement

Just buy the tried and true factory Panasonic prismatic module battery you'll get a good deal usually if you shop around and use the time you have and they generally run 8 to 10 years look at all these neck cells and aftermarket batteries that people have been shouting about for the last four or five years none of them hasn't even the near track record of the Panasonic EV battery so there's always that I can buy any of them I want easily for our four cars we buy the original Panasonic battery because it's original Panasonic company and they work there's no melting down no funny advertising no nothing just working battery so you can get involved and get on board with all the hype or not personally I wouldn't touch any of these engineered batteries made by small people in their living room or wherever they are when things happen well there you go If you really need your car or if this is just a toy and an experiment and you have plenty and can do whatever you want then have at it but if you really need your car and you have a job and you have work and a life and family and things you may not want to be tied up on what could be in transportation generally most people want kind of what's tried and true and works with their transportation You can afford to play around with your toys glasses with radios built in them and all that but with your vehicle generally not unless you have plenty and no worries.

 

There are a lot of bashers on Prius Chat. A "LOT" of know it all's. They know EVERYTHING!
And if you do not agree with them 100%, they attack you.
The "ignore" feature makes Prius Chat easier to read.

I was going to put in the pack from Toyota, but they said they can't/won't sell it over the counter
any longer. They can only sell/send it to a shop that is hybrid certified. Which is stupid.
It was VERY easy and simple to do.
I couldn't find one for a good price. There was a jdm one on ebay, but I didn't want to put a
used battery in.

I got the lithium because it was almost $400 less then the other new modules.
They were out of stock, so I was on the list for when they came in. It was only a few days when
I got an email saying they were in. Fairly easy to order. And the next day it was shipped.
I got it in a few days.
The hardest part was getting the original battery out. My brother helped me. We removed the
old modules, and installed the new ones. Which was easy. Putting in the Prius was a lot
easier because it was lighter.

I haven't had any issues with it. My mpg only improved by 1 or 2 mpg. When it's cold, I can drive up
too 10mph for a while before the engine kicks in. And I can drive further and slightly faster on just
the battery. But since the battery was 7 years old when I bought the Prius, I can't say if it's better
then the oem battery.

This is a place to get information. Then you decide from that information.
And it will depend on how much money you have to spend, or want to spend.

You could get the Prolong system and run it on your battery. I used it for the last 3 years.
It kept the battery alive for that time. But 14.5 years was its lifespan.

 

Your 9 year old original battery should last for a few more years.

Why take a risk with the V3 sodium-ion battery? It has only been tested for about 7 months. There is no track record on how long it will last.

The OEM HV battery has a very long track record, and it is known to last for 10+ years. My money is on a new OEM battery.