Expanding Battery Bank

[oshky]

Hello,

I would like to expand my battery bank with following arrangement:

First two batteries are: 100 Ah / 12 volts / Brand: Goal Zero SMA Deep Cycle Battery Tank / Date: February 2020
New two batteries are: 100 Ah / 12 volts / Brand: Duracell SMA Deep Cycle / Date: September 2020

I haven't connected the new ones yet with the first two dated February 2020. Both are in good shape.

Can I connect them all so they work as one battery bank even they're not from same manufacturer?

I appreciate your opinion.

 

[snoobler]

Yes. Assuming these are for 12V, just parallel all of them. If 24V, pair old with old to make 24V, pair new with new to make 24V and then parallel the two groups.

See "wiring" in link #2 in my signature.