BCU-NEV-XXC MANUAL
1.0
Any other charger used should charge to 3.55V x the number of cells in the battery. This peak
voltage applies to all LiFePO4/LFP battery brands and is required for correct balancing to be
applied by the BMS.
Note: 3.50-3.55V/cell is the standard peak charge voltage for
LiFePO4 (LFP) chemistry.
It is important that once the peak voltage is reached the charger should begin to taper the charge
current and switch off or fall to a lower voltage when the current falls to 1% of the Ah capacity.
Most modern chargers have a “Gel” or “AGM” charge program which can be acceptable for LFP
batteries. Charge to 29.2-29.4V then float indefinitely at 27.2-27.4V. The charger may be left on
when the battery is not in use if it has this characteristic.
Do not use chargers which have an “equalization” phase (unless it can be disabled). This will try to
charge the battery too high and damage it.
Commissioning the system
First double check all the connections.
Switch on the BCU.
After double checking all high voltage connections connect the AC power to the charger input. The
charger should commence charging. If not then check that all the green cell module LEDs are
illuminated and all the cell module and signal wires are correctly connected.
Do this for a few seconds and switch off the charger at the wall.
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