Victron energy BMV 600 Manual De Instrucciones página 12

correct operation of your BMV, and must be set appropriately in the
corresponding menu items.
2.3.4 Synchronizing the BMV
For a reliable readout of the state of charge of your battery, the battery
monitor has to be synchronized regularly with the battery and charger. This
is accomplished by fully charging the battery. When the charger is operating
in the 'float' stage, the charger considers the battery full. At this moment the
BMV must also determine that the battery is full. Now the Amp hour count
can be reset to zero and the state-of-charge reading can be set to 100.0%.
By precisely adjusting the charged-parameters in the BMV, the battery
monitor can automatically synchronize with the charger when the 'float'
stage is reached. The range of the charged parameters is wide enough to
adjust the BMV to most battery charging methods.
When the voltage supply to the BMV has been interrupted, the battery
monitor must be resynchronized before it can operate correctly.
Please note that regularly (at least once per month) fully charging your
battery not only keeps it in sync with the BMV, but also prevents substantial
capacity loss of your battery which limits it's lifetime.
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