[Sergio]

The main reason to pre-balance is to keep the charging cycle from stopping prematurely due to a "high-cell voltage" condition.

The Zeva can correct about 0.12AH/cell of imbalance per charging cycle, so it may take a while to get the cells balanced if they differ by too many AH.

The best approach is to monitor the first charging cycles and lower the "balancing voltage" if only a few cells are going above it.

You do not want every cell to be above the 'balance voltage' for too long or it generates too much heat in the Zeva board as the shunts get hot with operation.

As the cells start to reach the balance voltage at the same time, you can raise that value to where you would normally use it.

Remember the final setting for the "balancing voltage" will be "Charger Voltage/Number of Cells" (rounded UP).