Quattrohead
Solar Wizard
OK I understand now.
Seplos bms jumping SoC?
- Thread starter Dorokun192
- Start date
DiySolarU
New Member
- Joined
- Oct 4, 2020
- Messages
- 71
Now I have gathered a little more information. It must definitely be a firmware bug. It always occurs in the same way on different batteries with exact the same pattern. This means that it cannot be due to the cell itself or a bad contact.
1. it occurs about once a day
2. it is always cell no. 1 which measures approx. 125mV less voltage for about 5 seconds. I measure 1x per second.
3. it is always at a SOC of about 90-95%
4. it is always when no or less than 1A charge/discharge current is flowing.
5. On this Cell voltage there is no balancing active. Cell balancing starts at 3.40 Volt and stops at 3.380 Volt (Neey 4A Balancer). SEPLOS Balancig is set to 3.50 start voltage as not to disturb.
Total-current (4 Batteries parallel) = 0.0 A
Batterie Current = 0.0 A
Cell 1 3190
Cell 2 3313
Cell 3 3313
Cell 4 3313
Cell 5 3313
Cell 6 3313
Cell 7 3313
Cell 8 3313
Cell 9 3313
Cell 10 3313
Cell 11 3313
Cell 12 3313
Cell 13 3313
Cell 14 3314
Cell 15 3313
Cell 16 3314
1. it occurs about once a day
2. it is always cell no. 1 which measures approx. 125mV less voltage for about 5 seconds. I measure 1x per second.
3. it is always at a SOC of about 90-95%
4. it is always when no or less than 1A charge/discharge current is flowing.
5. On this Cell voltage there is no balancing active. Cell balancing starts at 3.40 Volt and stops at 3.380 Volt (Neey 4A Balancer). SEPLOS Balancig is set to 3.50 start voltage as not to disturb.
Total-current (4 Batteries parallel) = 0.0 A
Batterie Current = 0.0 A
Cell 1 3190
Cell 2 3313
Cell 3 3313
Cell 4 3313
Cell 5 3313
Cell 6 3313
Cell 7 3313
Cell 8 3313
Cell 9 3313
Cell 10 3313
Cell 11 3313
Cell 12 3313
Cell 13 3313
Cell 14 3314
Cell 15 3313
Cell 16 3314
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