Lithium or sodium for replacement

No balancing at all with lithium ion cells is a disaster waiting to happen.
Not measuring intermediate cell voltages is scary, too.

I agree, but it does need at least passive balancing, which it sounds like your product doesn't have.

click the "Post New Thread" button in the top right corner of any forum section.

No, but I will reply to the thread once you create it.

I would only need QTY1 module for a review, but QTY2 is better because I can test in parallel.
Note that based on the information you've provided so far, I can almost certainly assure you my review would identify several safety issues with your product.

 

There are various Li-ion chemistries. I was curious which you have chosen.

 

Venceder created a new thread like you requested,
My version of Li-ion modules for Toyota/Prius NiMH

Please use that new thread to discuss his battery project.

 

Just think of how much time and money Toyota would have not spent, and could still not spend,
if they knew you didn't need to balance the battery and maintain it to just a few tenths of each other.
No one would get that P08080 or whatever that number is....

And you don't have to worry about it freezing either....

 

I read somewhere that a lithium battery will be permanently damaged by freezing temperatures. My car has been parked outside for the last 2 winters, and temps have gone as low as -30. No damage has been detected. I know for a fact that no battery heating was used. So who is wrong?

My Gen 3 plug-in had a 4.4 kWh lithium battery and sat outside for 10 years. No damage beyond normal aging, as far as I could tell; 15% loss of capacity in all that time.

 

Okay, there is one...... tell that to the thousands of cars sitting, waiting to charge there batteries,
and they wouldn't....

Just remember, even a broken clock is correct twice a day....

 

If I read you correctly, you think that a battery that needs charging is damaged?
Please set me straight if so,

 

You're not reading correctly...