question

Thendo Alton Mbedzi avatar image
Thendo Alton Mbedzi asked

Discharging battery on backup system with grid availabl

1684068362701.png

I have a site that discharges battery on keep battery charged? does anyone know why?

Please note this is a backup system. Battery is on 99,9%

ess discharging
1684068362701.png (131.1 KiB)
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

2 Answers
nickdb avatar image
nickdb answered ·

How new is the site and what battery are you using?

This may well be due to the BMS balancing the battery, entering charge/discharge cycles.

3 comments
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Thendo Alton Mbedzi avatar image Thendo Alton Mbedzi commented ·
27th of April- SolarMD battery, sorry soc is at 99% and not reaching 100 because of the discharge
0 Likes 0 ·
nickdb avatar image nickdb ♦♦ Thendo Alton Mbedzi commented ·

That will be the bms doing that as part of its balancing. Send a snapshot of the cvl/ccl etc charts from vrm.

Min/max cell voltages.

Battery voltage, soc charts also.

0 Likes 0 ·
Thendo Alton Mbedzi avatar image Thendo Alton Mbedzi nickdb ♦♦ commented ·

Thanks, you pointed me to the right direction, BMS trying to balance

0 Likes 0 ·
Thendo Alton Mbedzi avatar image
Thendo Alton Mbedzi answered ·

Installed on the 27th of April

2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Related Resources

Additional resources still need to be added for this topic