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Specifications subject to change. See bluesea.com for current information.
P OW E R C O N V E R S I O N
BATTERY 2
BATTERY 3
BATTERY 1
AC SHORE
POWER
BATTERY 3
BATTERY 1
AC SHORE
POWER
BATTERY 2
Charge Coordination Explained
A boat’s batteries typically spend less than 2% of their time being
charged by the alternator. For the remaining 98% of the time they are
being maintained by the AC battery charger. During this time, it is
important that the proper charging stage of Bulk, Absorption, PreFloat,
or Float be applied to each battery.
When engine is running and alternator
is charging batteries, ACRs combine
batteries, providing charge to each
battery from the engine.
When P12 Battery Charger is operating,
communication with ACRs isolates
batteries so the proper charge is
applied to each battery.
P12 Four Stage Battery Charging with PreFloat
™
Explained
Other Battery Chargers
Conventional battery chargers move all batteries from Absorption to
the Float stage simultaneously with no ability to adjust for individual
battery requirements.
Bulk
charges batteries to 75-80% of full charge.
Absorption
slowly completes remaining charge.
PreFloat
™
moves each battery individually from Absorption to
PreFloat, based on the need of each battery. This prevents
overcharging and damage to the batteries. Up to 0.5V difference
between Absorption and PreFloat voltages can be achieved.
Float
maintains battery charge.
Battery Equalization Mode:
User selected battery equalizing provides
advanced battery conditioning, revitalizing wet acid batteries.
Forced Absorption:
A period when batteries are potentially
over charged.
14.5V
14.0V
T I M E
Absorption
Absorption
Absorption
PreFloat
Bulk
13.5V
Battery 1
Battery 2
Battery 3
PreFloat
Float
Example of Flooded LeadAcid Battery
14.5V
T I M E
Absorption
Bulk
13.5V
Battery 1
Battery 2
Battery 3
Float
Example of Flooded LeadAcid Battery
Absorption
Absorption
Forced Absorption
Forced Absorption
PN
Description
Voltage
7520
P12 Battery Charger
LED Remote
12V DC
1521
360 Panel P12 Battery
Charger LED Remote
12V DC
P12 Battery Charger LED Remote
Indicates battery charger stage and alerts as well as controlling
basic battery charger functions.
LED Indicators
• Charging:
Quick check for green light confirms charging
•
Charge Stage:
Displays charging stage including PreFloat for each battery
• Equalize:
Indicates when the charger is in equalization mode
• Fan Mode:
Indicates charger’s internal fan mode
• Charge Output:
Displays the percentage of output current for each battery.
Will also indicate maximum output setting when maximum output is
adjusted to accommodate for AC source limitations.
• Alert:
Provides warning and alert status for quick diagnostics
Four Control Buttons
• Fan:
User adjustable settings (OFF, LOW, or HIGH)
• Dim/ Alarm:
Provides adjustment to brightness of LEDs on display
as well as Silence function for alarms.
• Output:
User adjustable charger output when AC source limitations exist
that require lowering the AC current draw.
• Standby:
Places P12 Battery Charger into standby mode
7520
Scan for
additional
product
information
4.15"
(105.46mm)
2.90"
(73.70mm)
2.52"
(63.88mm)
3.01"
(76.56mm)
0.57"
(14.36mm)
0.38"
(9.65mm)
3.69"
(93.66mm)
1.50"
(38.10mm)
Mounting Hole Cutout
Ø1-1/4"
(31.75mm)
Clearance holes
for #6 screws
1521
360 Panel
P12 Battery Charger LED Remote
Dimensions (WxH):
4.88 x 4.75 in (123.83 x 120.65 mm)
UNDERWAY
AT THE DOCK
TECH
tip
by BLUE SEA SYSTEMS