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USER’S GUIDE
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6.2 INITIAL CHARGING
Unless your dealer has charged your battery prior to delivery, it will be received at partial state of charge. If
your system uses more than one battery, follow the steps below:
1. Prior to installation, turn each battery on, then measure and record each battery’s voltage.
2. If all voltages are within 0.5 volts of each other, turn them off, proceed with the installation, then follow the
normal charging procedure.
3. If the voltages differ by more than 0.5 volts, each battery should be individually charged, then the
installation can proceed.
6.3 BALANCING
One function of lithium-ion batteries is to maintain balance between each group of cells within
the battery. This allows the battery to deliver full capacity without any cells experiencing an over or
under-voltage condition.
Balancing is performed when a parallel group of cells reaches a specified threshold voltage corresponding to
nearly 100% state of charge (SOC). At that point, the highest-charged cells “bleed down” a small amount to
enable the remaining groups of cells to “catch up.”
6.4 INITIAL CHARGING CYCLES
In systems using more than one (1) battery, new batteries will be slightly unbalanced when they are unpacked
and initially installed. Interruption of individual battery charging current and charge cycling may occur during
the first charging cycle and is considered normal. Allow some extra time during first charging cycle to allow
the batteries to come into balance.
6.5 CHARGING PROFILES
The recommended charging approach is to use an I-E charging profile with a voltage setting of 55.2
to 57.6 VDC. Use of a compatible charging profile is highly recommended to obtain a fully-charged and
balanced battery pack. Other AGM or GEL charging algorithms may be used with varying degrees of
success, depending upon the charger’s specific settings.
Chargers which charge at lower voltages will not harm
the battery, but will not provide a full charge to maximum
capacity. This may affect range and usable lifespan of the
battery.
Chargers which charge at higher voltages will not harm the
battery, but may not provide a full charge because the battery
will shut off as soon as the voltage gets too high. Charger
cycling may result.
Recommended Charger Range 57.6 VDC55.2 VDC
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