CTEK MXS 5.0 Faq

11
What happens if I use the charger for batteries that are
larger than you recommend?
Using a small charger makes the charging time longer. Sometimes, this is critical. In such
cases, you should use a larger charger. If you only use the charger for maintenance charging,
a really small charger is often sufficient.
Does the battery have to be disconnected from the
vehicle when it is being charged with a CTEK charger?
No, CTEK chargers cannot damage sensitive electronics. So, you don't have to disconnect the
battery from the vehicle! However, you should take extra care when using Recond because
the voltage is 15.8V. Most manufacturers consider everything to be fine as long is voltage is
below 16V and CTEK is under that limit by a good margin, even during Recond. Note that the
service life of some components is shortened by high voltage. A rule of thumb says that a
light bulb's life span is halved by increasing voltage by 5%, but this is normally not any great
danger. If you have any sensitive electronics for which the manufacturer warns against high
voltage: disconnect them!
I have an AGM battery. Do I charge it in snowflake
mode?
Yes. For some AGM batteries, CTEK recommends snowflake- or AGM- mode that gives a little
higher voltage; 14.7V. Different battery brands may have different recommendations, so
check with your battery manufacturer what applies to your battery.
I have a CTEK charger. It used to work well, but now
nothing happens when I press the mode button. I can't
change between the "MC", "CAR” and "SNOWFLAKE”
modes. What can I do?
If you can't change the charging mode by pressing the mode button regardless of which
battery you are trying to charge, the charger is probably faulty. If you still have the warranty,
I recommend you go to your dealer with the charger, and the receipt the dealer will be able
to help.
Will a CTEK charger remember the settings if you
disconnect it from the mains power?
In the event of a power outage or when the charger is unplugged from power, CTEK chargers
do have a mode memory and will resume charging in the mode that was last selected when
power is restored.

CTEK MXS 5.0 Specifications

General

Input voltage	220-240 V
Input frequency	50/60 Hz
Battery voltage	2 V
Cable color	Black
Operating temperature (T-T)	-20 - 50 °C
Number of batteries supported	-
Product color	Black, Silver

Weight and Dimensions

Depth	168 mm
Width	65 mm
Height	38 mm
Weight	600 g