Gen 3 Prius Shows 1 Bar Of Battery Charge

Is it the original battery? Mine did that when it got weak. It surprised me!
And it would quickly charge fully, almost to the 2 tabs that indicate the terminals.

Time for a Sodium Ion Battery Pack!

 

I'm running it, it's GREAT!
Very light, easy to install. It hold the charge much longer. You can run in EV longer than
the oem battery.

 

when did you install the sodium ion pack, and how has it improved your driving experience? any significant difference in mileage?

i'm considering replacing the oem one when it dies, but the oem one is actually $400 cheaper than the sodium ion pack. plus i know i'll get ~250k miles from an oem pack. the sodium ones look attractive than oem- more power for longer EV use, about 45lbs lighter, slightly more overall power, but i've seen too many good things about it

 

I gained about 5mph in the city. I averaged 38mpg, but had to drive easily to get it.
I can now drive normally and get 42mpg without trying.

On the highway, I had to drive easy to get up to 65mph, but usually kept it at 64 or 63 and
averaged 44mpg.
Now I can drive normal, or a little faster and drive 65-67, and get 48mpg. If I can draft behind
a semi, I can get 52.

I'm driving a little faster and more sporty, and get the mpg I did driving carefully with the oem pack.

It would be a decent "guess" that you would get close to the mileage out of a replacement pack
and you did with the original one. "IF" the blocks are NEW. No one seems to know if they are new
ore "refurbished. Until you take it apart. But they might have stickers on they to seal it and if they are
broken, you loose the warranty. Which is only 2 years. Unless you have to dealer install it. Then it's 3.

 

Respects, but your car has 350K miles on it. Consider the big picture at this point.