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uguraladag avatar image
uguraladag asked

May I connect 2 pcs 200Ah&100 Ah lifepo4 batteries connected in parallel?

I use my solar system with 2 pcs 12.8 V 200 Amp Lifepo4 batteries connected in parallel. Can I use another brand 12.8 V 100 Amp Lifepo4 battery I also have without any problem in both charging and discharging by using Victron Cyrix-Ct 12-24-230 Amp Smart Battery Combiner?

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uguraladag answered ·

Mr.Hakamata ,

If I buy another 100 A battery, connect the 100s in parallel and connect them in parallel to the other 200s, will the problem be solved? Is there any problem with that?

@hakamaka

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kevgermany avatar image kevgermany ♦♦ commented ·
It's the same problem, slightly different flavour. All batteries will be in parallel.
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hakamaka answered ·

If it's about expanding the capacity of the battery bank you may simply hook up the 100 Ah in parallel to the existing twins. This isn't a preferable setup but it will work. Disadvantage is the uneven share of current, which leads to the 100 Ah first being discharged/ charged and therefore more stressed.

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