Section 8 --- Electrical Systems - House
Cayman 2005
268
Power Share
Setting the Power Share amps can limit the amount of AC power available to the internal charger.
Battery charger draw can exceed 20 AC Amps. When hooked to anything less than 50 Amp service it
may be necessary, depending on other AC loads, to adjust the Power Share amps to avoid overloading
the shore power breaker.
NOTE:
Limiting the amount of useable current for the charger increases the amount of time nec-
essary to charge the batteries.
Charge Cycles
The time it takes to fully charge the batteries varies
greatly. It can take several hours or even days, depend-
ing on the inverter's settings and state of charge of the
batteries. The charge cycle is done in three steps:
Inverter three-stage charging cycle:
• Bulk Charge Cycle: Brings the DC voltage up
high, initially between 14.2 - 14.6 Volts. The
length of time the inverter is in Bulk Charge
depends the state of charge of the batteries.
• Absorb Cycle: Absorb Cycle battery voltage is
the same as the Bulk Charge Cycle, between 14.2
- 14.6 Volts. Length of the Absorb Cycle is a
timed event determined by the inverter.
• Float Charge Cycle: Charge voltage is generally
around 13.3 - 13.7 Volts. Approximately 80% of
the charging cycle has been completed by this
time.
NOTE:
The Inverter/Charger will charge the batteries with AC power applied regardless of
remote status.
060236b
Bulk Charge.
Absorb is called
topping off.
Float: Maintenance keeps
it full.
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