US • 13
Recommended Minimum AWG Size for AC Extension cords
Length of cord feet (m) AWG Size of cord
25 (7.6) 18
50 (15.2) 16
100 (30.5) 12
150 (45.6) 10
OVERHEATING PROTECTION
The MULTI US 25000 is equipped with overheating protection. In high ambient tempera-
tures the output power is reduced. Do not cover the charger.
BATTERY CABLES
MULTI US 25000 is equipped with a set of battery cables with battery terminal clips. Do
not shorten the battery cables.
TEMPERATURE COMPENSATION
MULTI US 25000 has a sensor cable placed together with the battery cables. The unit will
automatically adjust the charging voltage if the temperature deviates from +77°F. A high
temperature lowers the voltage and freezing conditions is handled by higher voltage.
The temperature is best measured on or very close to the battery. Therefore always place
the sensor as close to the battery as possible when charging. The sensor cable could be
prolonged or cut to length with the same functionality. A short-circuited or disconnected
sensor is indicated by lamp A. The charging voltage will then be 14.4V.
MAINTENANCE
The MULTI US 25000 is maintenance-free. The charger must not be opened; doing so
will invalidate the warranty. If the power cable is damaged it must be replaced by CTEK or
its authorized representative. The charger casing can be cleaned using a damp cloth and
mild cleaning agent. Remove the plug from the power socket before cleaning.
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