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Mixed cell chemistry in system possible?
#1
Hi there.

Been lurking a bit and finally decided to join recently. I am still in the research phase and really don't have many cells (gathering has been slow). I was wondering though, is it possible to mix chemistries in a wall?

Say for instance I have a 48v system, if I set my charge and discharge limits to 46.4v and 54.6v respectively could I then parallel a 14s LiIon and 16s LiFePo4 string? From my calculation that would give me a voltage range of ~3.31 - 3.9 for the LiIon string and 2.9 - 3.4 for the LiFePo4 strings.

I know each chemistry has a different charge/discharge profile but as I understand so far that would allow both types of batteries to be utilized in a singular application.

Is this feasible or am I missing something?
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#2
Yes.

Look at my system that have LiFe and LiIon. 16s and 14s.

You need one BMS for each with its own settings.
berthfield likes this post
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#3
Thanks, have had a quick look at your build and I must say I am impressed. Guess I have a lot of reading to do.
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