Mastervolt Mac Plus 12/12-50

Mac Plus 12/12-50

Charging the service batteries on board of a vehicle or vessel
can be challenging. Recharging tends to take a long time and
batteries may not receive a full charge. This is a common problem
found in boats, service vans, campers and trucks. Smart alternators
and start/stop systems make the problem even worse.

Robust DC-DC charger guarantees optimal condition of your
service battery

Traditionally, a service battery is linked to the starter
battery by means of a charge relay. The starter battery is located
close to the alternator and receives most of the charge current.
However, the service battery is usually further away. Long cables
cause voltage drop, leading to slow charging, resulting in failing
appliances and premature failure of the battery.

Modern, fuel efficient engines are equipped with smart
alternators, following regulations such as Euro 5 and Euro 6.
Instead of a constant output, smart alternators provide a variable
voltage; after a brief charging period, voltage is reduced and the
charging stops. Furthermore, the energy produced by regenerative
braking leads to voltage peaks. Service batteries coupled in the
traditional way will receive hardly any charge and may be damaged
by these peak voltages.

To solve these issues, Mastervolt introduces the Mac Plus DC-DC
chargers, available in 12 V or 24 V. The Mac Plus monitors the
service battery and compensates the voltage loss. The proven 3-step
charge method ensures a quick and safe charge. Moreover, by
stabilizing the charge voltage, Mac Plus protects your service
battery and sensitive equipment.

The Mac Plus is your battery’s best friend. It monitors your
service battery and makes sure it’s always fully charged,
maximising the lifetime of your battery. 

Features

• Fast and safe charging during short trips.
• Fanless design for silent operation.
• Suitable for flooded, Gel, AGM and Li-Ion batteries (incl.
  LiFePO4).
• Charges even fully depleted batteries.
• Engine run detection protects starter battery.
• Adjustable current limits to meet Euro 5/6 requirements.
• Voltage stabilisation protects sensitive equipment, lights and
  loads.
• Parallel operation to obtain charging capacities well over 100
  Amps.
• MasterBus for intelligent system monitoring and
  automation.
• Temperature compensation and voltage sense for an optimal
  charging result.
• E-mark certification for mobile applications.
• Power supply mode.
• Heavy duty connections for easy installation and quick set up
  via DIP switches.

Applications

Boost charge voltage when service battery is located further
from charging source or in systems with a smart alternator. When a
stable power supply or different system voltage is
needed. 

Euro 5/6 solution

Charging service batteries in Euro 5/6 applications?
The Mac Plus provides constant power to the service battery, even
when the alternator is inactive. 

Parallel operation

The parallel configuration of several units will provide you
over 100 amperes. Advanced high-frequency technology with modern
microprocessors ensures minimum power loss when switching from 24
to 12 V and vice versa. 

Specifications

Specifications battery charger
Battery temperature sensor	yes, included
Battery voltage sense	yes
General specifications
Status indicator	yes, 3-color LED
Output voltage	10-15 V
Nominal output voltage	12 V
Output voltage stabilisation	2 % at extremes of tem­ps, load and input
Output voltage ripple (peak peak)	max. 1 %
Max. output power	725 W
Nominal output power	675 W
Max. output current	50 A
Output charge current (3-step mode)	50 A
Nominal input voltage	12 V
Input voltage range	10-16 V
Max. input current	50 A
Galvanic isolation	no
Voltage limited	yes
Efficiency	> 95 % (at nom. input voltage, full load); peak 97 %
Parallel configuration	yes
Alarm contact	yes, through MasterBus
MasterBus powering	no
Engine run signal input	yes (active high/active low)
DIP switches	yes, for basic setup
Dimensions, hxwxd	255 x 165 x 66 mm 10.0 x 6.5 x 2.6 inch
Weight	2 kg 4.4 lb
Approvals	CE, E-mark
Technical specifications
No-load consumption	< 2 mA
Charge characteristic	3-step+
Battery types	flooded, Gel, AGM, spiral, Lithium Ion, traction, user defined
3-Step charge option	yes (DIP switch settings)
DC consumption	< 5 mA
Connections	3 x M8 terminal for cable diameters of 10-50 mm, (positive input, positive output, joint negative connection) 8-pole screw connection for cable diameters of 0.75-1.5 mm (remote on/off, temperature sensor, voltage measurement)
Temperature range (ambient temp.)	-25 degreesC to 60 degreesC; derating > 40 degreesC -13 degreesF to 140 degreesF
Cooling	natural cooling
Protection degree	IP23
Protections	DC short circuit, overload, over temperature, reversed polarity (fuse)
MasterBus compatible	yes

Product Data Sheet