CTEK MXS 7000 - Manual (Page 5)

Analysis (Lamp 3)
Charging is suspended for a short period and the battery voltage measured. If it falls too
quickly, the battery is probably faulty. Charging is suspended and an error is indicated (lamp 0).
Maintenance charging - float (Lamp 4)
During the first 10 days of maintenance charging the battery is maintained with constant volt-
age, 13.6V. Float-maintenance is indicated by lamp 4.
Maintenance charging - pulse (Lamp 4)
The state of charge varies between 95% and 100%. The battery receives a pulse when the
voltage sinks, keeping the battery in good shape when it is not being used. The charger can be
connected for months at a time.
If the battery is charged and/or the battery’s terminal voltage drops, the charger starts a charge
pulse until the voltage has reached the preset level, 14.4V or 14.7V. The charge pulse is then
interrupted and the cycle is repeated as long as the charger is in pulse maintenance phase. If
the terminal voltage drops even lower, the charger automatically reverts to the beginning of the
charging curve. Pulse maintenance phase is indicated by lamp 4. If possible, check the water
level in the battery.
Chosen mode: ”SUPPLY”
MULTI XS 7000 has a Supply mode setting which has a constant voltage of 13.6V and current
up to 7A. This mode can also be used for maintenance charging of an already fully charged
battery, called Float maintenance. This type of charging keeps the battery at 100% charge.
The constant small overcharge can also increase water loss. A battery does not have to be
connected for the charger to deliver voltage. This means that the spark protection is not active
in this mode. It is not appropriate to charge a completely discharged battery in Supply mode,
since this will not result in a completely charged battery. In this mode, MULTI XS 7000 can also
be used as a power generation unit for operating equipment that requires 13.6V and a maximum
of 7A. If the selected current exceeds 7A, the output voltage will drop as the load increases. The
charger has electronic overload protection in this mode, which is activated if the charge is so
great that the output voltage from the charger falls below around 9V and the current ís around
7A. In the event of an overload, the charger goes into error mode (lamp 0). Supply mode is
indicated with lamp D and lamp 5.
Chosen mode: ”RECOND”
MULTI XS 7000 has a Recond mode which is used to recondition a battery that has been
severely discharged. The battery is first charged using the mode ”NORMAL”. When the analysis
phase is complete, the charger begins reconditioning the battery by providing a constant
current of 1.5A and a maximum voltage of 15.7V. After 0.5–4 hours, the battery is completely
reconditioned and the charger goes into pulse maintenance. The battery is ready to be used, or
store it with pulse maintenance active until you are ready to use the battery. Recond is indicated
by lamp E and lamp 6. Note that the recond phase begins with normal charging and that the
charger therefore will indicate the charging phases according to the descriptions above first.
Lamp 6 is first lit when the reconditioning begins.
TEMPERATURE PROTECTION
MULTI XS 7000 is protected from being overheated. The power will be reduced if the ambient
temperature is raised.