question

gpigeon avatar image
gpigeon asked

Can you please explain the BMV702 data?

I have a BMV702 with bluetooth installed on a 1410Ah Gel battery system through Schneider Charge Controllers & Inverter.

My questions...

1. What does the "Discharged Energy" mean? Current reading is 2581kWh.

2. What does the "Charged Energy" mean? Current reading is 3280kWh. Why is this so different to the "disch. Energy"?

3. No reading is shown for "Average Discharge". Why?

4. No reading is shown for "Total Charge Cycles? Why?

thnks in advance for replies.


battery
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3 Answers
Paul B avatar image
Paul B answered ·

1, this is the Total Kwh that you have taken from your batteries

2. This is the Total KWh that you have added/Charged your batteries,

The diferance it because Lead Acid (gel AGM etc) are inefecient and thus around for every 100 amps you draw out you have to put back 125 amps

3. its should display in time

4. again it will take time to show these figure

re items 3 and 4 also this will depend on what settings you have added to the BMV702.

ie

Battery capacity etc etc


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gpigeon avatar image gpigeon commented ·

"Paul B", thanks for your reply.

I didn't realise the Gel batteries were so innefficient but what you say makes sense.

The system has been up and running for 2 yrs now! How much time is required?

Generally I am quite happy with everything.

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Daniël Boekel (Victron Energy Staff) avatar image
Daniël Boekel (Victron Energy Staff) answered ·

Hi @gpigeon

from the manual:

The number of charge cycles. A charge cycle is counted every time the state of charge drops below 65%, then rises above 90%


https://www.victronenergy.com/upload/documents/Manual-BMV-700-700H-702-712-EN-NL-FR-DE-ES-SE.pdf

4.3 parameter 'd'

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gpigeon avatar image
gpigeon answered ·

"Paul B" if your still available??? Or some other knowledgeable character.....

Almost 3 yrs since installation but still no Average Discharge or No of cycles!

What constitutes a "cycle"?

All else is going well.

Cheers. Bill.

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