8
3 OPERATING INSTRUCTIONS
3.1
FEATURES
The Mastervolt ChargeMaster Plus is a fully automatic
battery charger. This means that under normal
circumstances it may stay switched on with the AC power
and batteries connected. The ChargeMaster Plus is
suitable for charging of Li-ion and lead-acid batteries,
which may include maintenance-free, low maintenance,
AGM/spiral, gel or deep-cycle batteries.
WARNING
The MLi charging voltages on this charger fit
the Mastervolt Li-ion (MLi) batteries but do not
necessarily fit other Li-ion batteries! Always
follow the instructions provided by the battery
manufacturer!
Battery’s Best Friend
REVIVAL MODE
Automatically charges flat batteries, see section
3.4.3.
MULTI CHEMISTRY
When using different battery sizes or chemistries
(eg. the starter battery differs from the service
bank), the Smart terminal avoids damage/
overcharge by limiting the current and/or by
selecting a different chemistry
MULTI BATTERY
Charge 1 to 3 batteries at the same time
MULTI VOLTAGE
Charge 12V auxiliary battery from a 24V charger
THREE OUTPUTS
Full charge power available for each battery. The
ChargeMaster Plus is capable of delivering full
output power on all three outputs. Ensuring on
demand power for the battery that needs it most
PRIORITY CHARGE
Redirects power to the battery with the lowest
state of charge
The ChargeMaster Plus has the ability to
individually move each battery from absorption to
pre-float stage. See section 3.4.1.
SAFE CHARGE
Quickly recognizes the State of Charge The
ChargeMaster Plus will prevent unnecessary
charging (overcharge) of your batteries. The
ChargeMaster Plus will detect previous charges
and will reduce the Absorption timer so batteries
are not overcharged.
3 STEP + ALGORITM
Fast charging and extended battery life
The three-step Plus charging method guarantees
that the batteries are always charged to 100%.
See section 3.4
Global Charging
GLOBAL AC
The ChargeMaster Plus has an auto-ranging
input facility which makes it feasible to operate on
almost any AC power source in the world. It
operates smoothly on both 230V as well as on
120V without any compromises for the output
current
RUGGED POWER
Works under extreme conditions; Operating
range -25°C ... 80°C / -
13°F … 176°F. See
section 4.2
Power On The Move
SMART TERMINAL
– OUTPUT 3
Charge 3 batteries from a single alternator
When charging from an alternator, the Smart
input acts as a voltage sensitive relay. While the
battery coupled to the smart input, is being
charged, the Smart terminal distributes the
current to the other batteries (up to 40A). See
section 3.5
Powerful Connections
MASTERSHUNT READY
Seamless integration with MasterShunt. See
section 5.2.3
POWER SUPPLY MODE
With an external AC source connected, the
ChargeMaster Plus charger also serves the
functions of an AC to DC converter to supply DC
loads with or without batteries connected
CURRENT CONTROL
Prevent blown shore fuses by adjusting the AC
input power
MasterBus Compatible
MASTERBUS INSIDE
For
intelligent
power
systems
and
easy
monitoring. See section 5.2
System Simplicity
STATUS DISPLAY
Shows charger- and batteries status at a glance
