How Many Pylontech Batteries Should i Get?

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carljgreen asked Sep 26, '23

How Many Pylontech Batteries Should i Get?

Hello, I have a Multiplus 24/5000/120 which currently is hooked up to a 6 x 12v (200Ah) Northstar Blue 210 lead batteries.

My (Estimated) electricity usage (annually) is 4200 kwh (@ 10-12 kwh per day)

I want to change them out for Lithium ones and am looking at the Pylontech UP2500 ones.

How many batteries should I get? (I want to reduce my reliability of the grid and reduce my energy costs and footprint)

Does anyone have any experience with these batteries and (Normal) usage on a domestic house?

I realise that I will not be totally free from the grid, but figure every little helps nowadays!

I would appreciate any help.

Thanks

Lithium Battery Pylontech storage

2 |3000

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Answer 1 · 2023-09-26T14:57:34Z

chrichri answered · Sep 26, 2023 at 02:57 PM

Hi,

as the max current of this battery is 85Amps I would take minimum 3 Units in parallel.

If you take only two, you will be able to run the inverter max to about 3500Watts.

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2 |3000

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carljgreen commented · Sep 27, 2023 at 06:10 AM

Thank you, I was thinking of 4?

Does that sound like it will still work to you (Charge efficiency etc).

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Answer 2 · 2023-09-27T06:23:12Z

yann answered · Sep 27, 2023 at 06:23 AM

As said, per current you need at least 3. Then you can add more if you have enough PV available to charge

2 |3000

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Answer 3 · 2023-09-27T07:07:48Z

nickdb answered · Sep 27, 2023 at 07:07 AM

Do not size for max battery current, the continuous rating is most likely what the BMS will send to the inverter as a limit.

The current specs have a recommended discharge rating of 56A, it would be advisable to rather use this for a 24V system. 4 modules would be my preference.

2 |3000

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