Regal 53 SC Owner's Manual page 66

BATTERY SPECIFICATIONS
Battery
Group
Type
Engine
Specialty
Cranking
House 8D
Your Regal yacht utilizes AGM (Absorbed Glass Mat)
batteries which their construction allows the electrolyte
to be suspended in close proximity with the plates active
material. The design allows oxygen to recombine with hy-
drogen gas, thus replenishing the battery's water content
and alleviating the need for refi lling. This set-up normally
enhances both the discharge and recharge effi ciency.
Other AGM battery features allow easy storage and less
sulfating or degrading verses "wet cell" batteries.
Also, there is little chance of a hydrogen gas explosion or
corrosion when using these batteries.
HOUSE BATTERY
The deep-cycle house battery employed to supply many
of the ship's DC components use energy at a much slower
rate and often do not get completely re-charged until the
end of the day. This deeper and more strenuous discharge
is hard on a battery and requires different design specifi -
cations; the result is a battery with AGM sandwiched be-
tween much thicker plates than the cranking battery that
will withstand the demands of deep cycling. It is recom-
mended that if one house battery is defective replace the
whole bank as the older ones left will tend to bring down
the new one.
CRANKING BATTERIES
The engine cranking batteries used to supply starting am-
perage use energy at a much quicker rate. They are made
with AGM sandwiched between much thinner plates but
many more layers than deep-cycle types which contribute
to delivering quick and massive amounts of energy for
tough starting assignments. This type battery replenishes
its energy quickly through the engine alternator system.
CCA @0 Reserve
Degrees F. Capacity
1400 400 min.
840 160 min.
BATTERY TERMINOLOGY
Group- Batteries are divided into groups which identify
the height, length, and width of the battery. This is useful
information should a replacement battery become neces-
sary.
Cold Cranking Amps (CCA)- This rating measures the
cranking power a full charged marine battery has available
to start at 0 degrees F. Basically, the higher the rating the
greater starting power of the battery. Note: This is not an
important specifi cation for deep cycle batteries.
Reserve Capacity (RC)- As usage on the boat increases
so does the need for more reserve capacity. The reserve
capacity represents the length of time in minutes at 80 de-
gres a new fully charged battery can maintain the yacht's
electrical needs without the engine running or in the event
the alternator fails.
In general, the higher the minute rating, the greater the
battery's ability to run the yacht's electrical accessories with
the engines off or in the event an alternator or belt fails.
Battery Age- Normally located on the top or side of the
battery is a label showing the month and year the battery
was shipped from the factory. The letter corresponds with
the month, starting with "A" for January, "B" for February,
and so on.
The number represents the year with "9" standing for
2009, 0 for 2010, and so on. A9 would be January, 2009.
CO would be March, 2010 and G1 would be July, 2011.
Battery age is a factor used to determine replacement needs.
See Chapter 8 for battery maintenance tips.
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Chapter 4