Specifications are subject to change. See bluesea.com/P12 for current information.
Specifications
5
* Consult battery manufacturer specifications for other battery types to avoid damage. Do not mix battery types.
** Battery bank sizes are tested to California Energy Commission compliance (CEC). Larger and smaller size banks could charge well, but consume slightly
more power over the charging cycle.
Regulatory
Designed and constructed for compliance to UL-1236 Marine, CSA 22.2 No. 107.2, and ABYC A-31 standards.
CE Marked
Ignition Protection per ISO 8846 and SAE J1171. Meets FCC Part 15, Class B requirements. To view all regulatory specifications visit www.bluesea.com/P12.
California Energy Commission (CEC) compliant. The energy saving feature may be disabled by the user following the steps on page 14 of this manual.
7531
7532
Total Output Current (continuous)
25A
40A
Input AC Current
4.5A @ 115V AC / 2.25A @ 230V AC
7.5A @ 115V AC / 3.75A @ 230V AC
Nominal Output Voltage
12V DC
12V DC
Output Connections
3 positive, 1 negative
3 positive, 1 negative
Universal AC Input Voltage
115–230V AC
115–230V AC
Input Frequency Range
50–60 Hz
50–60 Hz
Typical Float Voltage
13.5V DC
13.5V DC
Output Voltage Accuracy
0.05V DC
0.05V DC
Minimum Operating Temperature
−20°C (−4°F)
−20°C (−4°F)
Full Output Maximum Temperature
45°C (113°F)
45°C (113°F)
Minimum Storage Temperature
−30°C (−22°F)
−30°C (−22°F)
Maximum Storage Temperature
80°C (176°F)
80°C (176°F)
Warranty
5 Year
5 Year
Battery Types*
Flooded, Gel, AGM, TPPL
(Thin Plate Pure Lead)
Flooded, Gel, AGM, TPPL
(Thin Plate Pure Lead)
Recommended for Battery Bank Sizes**
60Ah Minimum,
Example: 1 x Group 24
330Ah Maximum,
Example: 3 x Group 31
60Ah Minimum,
Example: 1 x Group 24
440Ah Maximum,
Example: 4 x Group 31
Conductor Length in feet (meters)
Charger Rating
25A
40A
6 ft (1.83 meters)
14 AWG (2.5mm²)
8 AWG (10mm²)
10 ft (3.05 meters)
12 AWG (4mm²)
8 AWG (10mm²)
15 ft (4.57 meters)
10 AWG (6mm²)
6 AWG (16mm²)
20 ft (6.09 meters)
8 AWG (10mm²)
6 AWG (16mm²)
25 ft (7.62 meters)
6 AWG (16mm²)
4 AWG (25mm²)
Recommended Battery Fuse
30A
60A
Region
Line
Neutral
Ground (Earth)
North America
Black
White
Green
Europe
Brown
Blue
Green-Yellow
Australia/ New Zealand
Brown or Red
Blue or Black
Green-Yellow
Table A:
Minimum Recommended Wire Size*
Appropriate Fuses and Fuse Holders
Charger Rating
Fuse Type
Fuse Holder
25A
40A
MRBF Terminal Fuses
5191 Terminal Fuse Block
5175 (30A Fuse)
5178 (60A Fuse)
AMI®/MIDI® Fuses
7720 Safety Fuse Block
5250 (30A Fuse)
5253 (60A Fuse)
Table B:
Recommended DC Circuit Protection
Table C:
Typical AC Regional Wire Colors
Table D:
AC Wire - Circuit Protection Selection Chart
7531
(25A)
7532
(40A)
Input Watts
450
750
120V AC Application
4.5A @ 100V AC
7.5A @ 100V AC
Minimum AC Wire Size
18 AWG (0.75mm²)
16 AWG (1.5mm²)
Circuit Breaker
10A
15A
230V AC Application*
2.25A @ 200V AC
3.75A @ 200V AC
Minimum Wire Size
18 AWG (0.75mm²)
18 AWG (0.75mm²)
Circuit Breaker
5A – 10A
5A – 10A
*
Typical of Europe
Type
Absorb Volts
Float Volts
FLA – Flooded Lead Acid
14.5V
13.5V
AGM – Absorbed Glass Mat
14.35V
13.3V
Gel – Gelled Electrolyte
14.1V
13.5V
TPPL – Thin Plate Pure Lead
14.7V
13.6V
¹
User Adjustable
12.5V
Default
12.5V
Default
¹
Taken from Odyssey Tech Notes, Northstar operation Manual
Table E:
Default Voltages by Battery Type
Batteries should match in chemistry, although many AGM’s and flooded batteries are
compatible. Based on 25°C (77°F)
*
Based on 3% voltage drop. If fast charge recovery is important, use larger wire. Double the conductor
length entry to get a 1.5% drop, triple the conductor length to get a 1% voltage drop.
P12
7531 AND 7532 BATTERY CHARGERS
