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electrical:12v:drop-in_lifepo4
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| Both sides previous revision Previous revision | Next revision Both sides next revision | ||
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electrical:12v:drop-in_lifepo4 [2022/06/16 23:08] frater_secessus [myth: you have to charge Li to 100%] |
electrical:12v:drop-in_lifepo4 [2022/06/16 23:16] frater_secessus [cell balancing] |
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| Line 386: | Line 386: | ||
| * cell 2 = 3.400v | * cell 2 = 3.400v | ||
| * cell 3 = 3.400v | * cell 3 = 3.400v | ||
| - | * cell 4 = 3.**500v** <-- balancer will try to slow this one down | + | * cell 4 = 3.**500v** < |
| In both cases the overall battery voltage is 13.6v, but in the unbalanced battery cell #1 is lagging (reducing capacity) and cell #4 is too high. The balancer will attempt to rein in #4 but the effect is tiny. Using a typical balancing current of 50mA, if you are charging at 20A that means the cells are receiving 5A except cell #4 which gets only 4.95A, about a 1% difference. | In both cases the overall battery voltage is 13.6v, but in the unbalanced battery cell #1 is lagging (reducing capacity) and cell #4 is too high. The balancer will attempt to rein in #4 but the effect is tiny. Using a typical balancing current of 50mA, if you are charging at 20A that means the cells are receiving 5A except cell #4 which gets only 4.95A, about a 1% difference. | ||
electrical/12v/drop-in_lifepo4.txt ยท Last modified: 2024/04/12 23:02 by frater_secessus
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