Mixing and matching similar lithium batteries?

[ericfx1984]

So I'm looking at purchasing about 200 amp hours worth of pre-built lifepo4 battery packs and I would like to, at a later date, add at least another 200 amp hour

But I realize one of the problems with buying cheap Chinese lithiums is that they may not have the same product later

So I've been thinking about this for a while and I'm thinking based on the fact that they have a battery management system but as long as the batteries are fairly similar same voltage and same capacity with a similarly specced BMS that they should play well together if one is added maybe 6 months to a year later? What are your thoughts on that???

 

[rmaddy]

Search results for query: different batteries in parallel

diysolarforum.com

Many of these results are about connecting different Ah batteries but there are discussions about exactly what you are planning to do as well.