After a lot hesitation I decided last night to replace the modules in my 2010 Toyota #
Prius #
hybrid #
battery that have almost reached EOL.
My initial plan was to switch from OEM nickel-metal hydride (which is nasty, toxic stuff and quite expensive - even a reconditioned battery would cost me between 3-4k$) to Li-Ion...
...but Li-Ion does not work well in colder climate.
Then I learned about sodium-ion that has been around since the 80s but has been widely ignored by the industry with the rise of Li-Ion in the 90s.
So-Ion actually has almost all of the benefits of Li-Ion minus the toxicity and sensitivity to cold so I went for that.
The whole process went smooth by taking my time, watching some tutorials and follow the manufacturers installation guide.
I dont even get why I was so hesitant to do this. Everything is pretty straight forward and there is basically not much that can go wrong.
exposed

removed

disassembly

corroded bus bars

stacking new modules

old modules

reassembly

#
ev #
diy #
sustainability