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4.0
OPERATION
4.1 Battery Charging Information
4-Stage Charging
The EcoPulse has a 4-stage battery charging algorithm
for rapid, efficient, and safe battery charging. Figure
4-1 below, shows the sequence of stages.
BULK
NIGHT
ABSORPTION
CHARGE
Figure 4.1. EcoPulse Charging Algorithm
Bulk Charge Stage
During Bulk charging, the battery is not at 100% state
of charge and battery voltage has not yet charged to
the Absorption voltage set-point. The controller will
deliver 100% of available solar power to recharge the
battery.
20
Operation
FLOAT
NIGHT
TIME
Absorption Stage
When the battery has recharged to the Absorption
voltage set-point, constant voltage regulation is
used to maintain battery voltage at the Absorption
set-point.
Float Stage
After the battery is fully charged in the Absorption
stage, the EcoPulse reduces the battery voltage to
the Float voltage set-point. The purpose of float is to
protect the battery from long-term overcharge.
Equalization Stage
WARNING: Risk of Explosion.
Equalizing vented batteries produces
explosive gases. The battery bank must be
properly ventilated.
CAUTION: Equipment Damage.
Equalization increases the battery voltage
to levels that may damage sensitive DC
loads. Verify all system loads are rated for
the temperature compensated Equalize
voltage before beginning an Equalization
charge.
EcoPulse Operator's Manual
21
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