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dmay avatar image
dmay asked

AH setting

I just installed my BMV -712 smart. I have 4 - 6v in series with 235 AH in each. I set the unit to 470 AH and it took it but on the main readout it is reading 240 AH only. I tried to reset but it still shows 240. Doesn't seem right!

BMV Battery Monitor
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Kevin Windrem avatar image Kevin Windrem commented ·

470 seems correct for 2s2p configuration.

What are you calling "main readout"? And where are you setting the value?


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2 Answers
Stefanie (Victron Energy Staff) avatar image
Stefanie (Victron Energy Staff) answered ·

Hi @Dmay,

4x 6V/235Ah in series = 24V/235Ah

If you put them all in parallel, you'll get 6V/940Ah (Thanks for doing the correct math, Mark)

If you put them in series/parallel (2s2p), you'll get 12V/470Ah.

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Mark avatar image Mark ♦♦ commented ·
4x235Ah in parallel is 940Ah, not 470Ah :-)

Not that you would actually wire it that way, as it's only 6V...

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Stefanie (Victron Energy Staff) avatar image Stefanie (Victron Energy Staff) ♦♦ Mark ♦♦ commented ·

As a matter of fact: i was the worst in math at school :D

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dmay avatar image
dmay answered ·

Yes they are series/parallel.

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