PROSINE 2.0 INVERTER•CHARGER USER’S MANUAL
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Equalization Charge
The fourth charging stage, the equalization charge, is manually initiated
because it is not required each time the battery is recharged. Equalization is a
deliberate overcharge designed to reduce sulfation and stratification in the
battery. This helps it reach and maintain peak capacity by equalizing the
chemistry in the individual battery cells.
An equalization charge should only be performed on vented, flooded (non-
sealed or “wet”) batteries and only as often as recommended by the battery
manufacturer.
Two-Stage Charging Profile
In a two-step charge, the charger finishes Absorption but does not go to Float
mode because some battery manufacturers advise against floating their
batteries. The PROsine 2.0 goes into a monitoring mode instead where the
inverter•charger monitors the batteries but does not charge or float them. In
this mode, the PROsine 2.0 will not supply current to power loads.
In a two-step charge, the charging current and voltage delivered to the battery
vary depending on:
• Battery type setting
• Battery temperature (by configuration or battery temperature sensor)
• AC input breaker setting (AC service setting)
• Battery bank size (capacity)
While the batteries are being charged, you can monitor which stage they are in
by viewing PROsine System Mode on the PROsine—Diagnostics menu. See
page 58.
WARNING: Explosion Hazard
Equalization produces explosive gases which must be allowed to vent.
Any sparks can cause an explosion.
WARNING
Equalization can charge batteries to 17.5V, which may be damaging to
DC appliances. Xantrex recommends disconnecting any sensitive DC
loads during equalization.
CAUTION
Check the specific gravity of each cell periodically during equalization.
Terminate the cycle when all cells read
≥
1.265.
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