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XS 3600
Battery charger
For lead-acid batteries 14-120Ah
User’s Manual and a guide
to professional battery charging
For Starter/Deep Cycle batteries
Congratulations on your purchase of your new professional XS 3600 Switch Mode
Charger with Pulse Maintenance. XS 3600 is a member of a family of professional
chargers from CTEK Sweden AB. It represents the state-of-the-art technology for battery
charging. A XS 3600 will prolong the lifetime of your battery. Read this user manual and
follow the instructions carefully before using the charger.
The charger is designed for lead-acid batteries from 14-120Ah. Do not use the charger
for any other purpose.
Use safety glasses and turn your head away when connecting or disconnecting a
Battery acid is corosive. Rinse immediately with water if acid comes into contact with
skin or eyes. Seek medical advice.
Make sure that the cable is not being pinched or in contact with warm surfaces or sharp
While charging, a battery can emit explosive gases, so it is important to avoid sparks in
the immediate area.
Always provide for proper ventilation during charging.
Avoid covering the charger.
Make sure that the electrical cable does not come into contact with water.
Never charge a frozen battery.
Never charge a damaged battery.
Do not place the charger on the battery while charging.
The electrical connection must fulfil the national heavy current requirements.
Check the cabling in the charger before use. Make sure there are no cracks in the
cabling or in the protective covering. A charger with damaged cables may not be used.
Always check that the charger has gone over to maintenance charging mode before
leaving the charger unattended and connected for long periods. If the charger had not
gone over to maintenance charging within 3 days, this is an indication of a problem. In
this case the charger must be disconnected manually.
All batteries fail sooner or later. A battery that fails during charging is normally taken
care of by the chargers advanced control, but certain uncommon errors in the battery
can still arise. Don’t leave the battery charger unattended for a longer period of time.
Only mount the charger on a flat surface.
This equipment may not be used by children or by those who can not read and
understand the manual if they are not supervised by a responsible person who can
guarantee that the battery charger is being used in a safe manner. Store and use the
battery charger out of the reach of children. Make sure that children do not play with the
battery charger.
Charging batteries mounted in a vehicle:
1. The power cord should be disconnected before connecting or disconnecting the battery
2. Identify the pole that is grounded (attached to the chassis). Ground is normally
connected to the negative terminal.
3. Charging a negatively grounded battery. Connect the red wire to the positive pole of the
battery and the black cable to the vehicle’s chassis. Be careful not to connect the black
cable in the vicinity of a fuel pipe or the battery.
4. Charging a positively grounded battery. Connect the black wire to the negative pole of
the battery and the red cable to the vehicle's chassis. Be careful not to connect the red
cable in the vicinity of a fuel pipe or the battery.
Charging of a battery not connected to a vehicle:
1. The power cord should be disconnected before connecting or disconnecting the battery
2. Connect the red wire to the positive pole of the battery and the black cable to the
negative pole.
Connecting the provided cables with eyelet terminals:
Make sure that the cable is not being pinched or in contact with warm surfaces or sharp
edges. When the cable is mounted on the battery, it should not be connected to the charg
er. Connect the eyelet terminals to the battery's poles - the red cable to the positive pole
and the black cable to the negative pole. After this, the quick contact can be connected.
Reverse Polarity Protection
If the battery cables are connected incorrectly, the reverse polarity protection will make
sure that the charger and the battery are not damaged. In this case, the red warning lamp
(0) will be lit.
Start charging
1. Connect the power cord to the power outlet.
2. When you are sure the battery leads are correctly placed, connect the power cord to
the power outlet to begin charging. If the battery leads are wrongly connected, the pole-
changing switch will ensure the battery and charger are not damaged. The fault indicator
will light. In which case start from the beginning again.
3. The charging lamp
will now indicate charging or the maintenance lamp will
indicate that the battery is fully charged. If the voltage drops the charger sends a pulse to
the battery. The length of the pulse depends on how much the voltage has dropped. The
charger can be connected for months.
4. If nothing happens: If the voltage indicator is lit but no other lamp is lit there could be
a bad connection to the battery or chassis or the battery could be faulty. Check the wall
power outlet. If you experience problems: start with the sensitive connection between the
battery clamps and the charger.
5. Charging can be stopped at any time by disconnecting the supply cord. Always remove
the power cord from the power outlet before disconnecting the battery leads from a
battery in a vehicle. When you stop charging a battery in a vehicle, remove the cable from
the chassis before removing the other cable.
6. If the charger lamp and the maintenance-charger lamp are ashing alternately, the
reason for this is due to:
An interruption during charging, due to a loose connection or because the battery has
ceased to work.
The battery has become sulphated. If the lamps ash for more than 30 minutes, this
indicates that the battery is dead and needs to be replaced.
If there is an interval of more than 10 seconds between the ashes, this indicates that
the battery has a high self-discharge rate and may need to be replaced.
XS 3600 operates in a four step fully automatic cycle IU
. It begins charging with an
almost constant current until maximum voltage is reached. The charger changes mode
at this point. It locks the voltage at maximum level and allows the current to drop. The
XS 3600 switches automatically to pulse maintenance charging when the current drops to
0.4A. The charging cycle restarts if the battery voltage drops to 12.9V.
Desulphation - Desulphation with pulsing for sulphated batteries.
Bulk - Charging where 80% of the energy is returned. The charger delivers an almost
constant current until the battery voltage reaches maximum level.
Absorption - Charging up to almost 100%. The charge current falls and the voltage is
kept constant at the maximum level.
Pulse - Maintenance phase, where the charger delivers a pulse if the battery voltage
drops. Charging varies between 95% and 100%. The battery receives a pulse when the
voltage reduces. Keep the battery in good condition when not in use. The charger can be
connected for months.
XS 3600 is protected from being overheated. The power will be reduced if the ambient
temperature is raised.
The charger is maintenance free. Note that disassembly of the charger is not permitted
and will void the warranty. If the power cord is damaged, the charger must be left to
the reseller for maintenance. The case can be cleaned with a soft damp cloth and mild
cleanser. The charger should be disconnected from the power while cleaning.
XS 3600 is delivered with a set of battery leads with battery pole clamps and a set of
battery leads with eyelet terminals.
CTEK SWEDEN AB, Rostugnsvägen 3, 776 70 VIKMANSHYTTAN, SWEDEN provides
a limited warranty to the original purchaser of this product. This limited warranty is not
transferable. The unit is warranted against defective workmanship or materials for two
years from the date of purchase. The customer must return the product together with
the original purchase receipt to the place of purchase. This warranty is void if the unit is
handled carelessly, opened or repaired by anyone other than CTEK SWEDEN AB or its
authorized representative. CTEK SWEDEN AB makes no warranty other than this limited
warranty and expressly excludes any implied warranty including any warranty for conse-
quential damages. This is the only expressed limited warranty and CTEK SWEDEN AB
neither assumes nor authorizes anyone to assume or make any other obligation towards
the product other than his limited warranty.
Model XS 3600
Voltage AC 220-240VAC, 50-60Hz
Back current drain* < 1mA/month
Voltage Charging Voltage Nominal: 12V; 14.4V
Ripple** Max 50mV rms, max 0.13A
Current 3,6A
Ambient Temperature - 20°C to + 50°C, power is reduced automatically at increased
ambient temperature.
Cooling Natural convection.
Charging cycle XS 3600 is a multistage fully automatic charger
Type of batteries All types of 12V lead-acid batteries (Wet, MF, VRLA, AGM and
Battery Capacity 14 to 120Ah
Dimensions 165x61x38mm (L x W x H)
Insulation IP 65***
Weight 0.5 kg
*) Back Current Drain is what the charger uses to drain the battery if the power cord is
**) Quality of the current and voltage are very important. High current ripple heats up the
battery and makes the positive electrode age prematurely. High voltage ripple could harm
other equipment connected to the battery. XS 3600 produces a high quality current and
voltage with very low ripplel.
***) If the power connected is the flat European contact type, the battery charger has
insulation class IP63, except in Switzerland where IP65 is valid.
CTEK SWEDEN AB, Rostugnsvägen 3, 776 70 VIKMANSHYTTAN, SWEDEN. Declares
under sole responsibility that the battery charger XS 3600, to which this declaration
relates is in conformity with the following LVD standards: EN60335-1, EN60335-2-29
according to the terms of directive 73/23/EEC with the addition of 93/68/EEC. This
product also is in agreement with the following EMC standards: EN55011, EN 61000-3-3,
EN 61000-3-2, EN55014-1 and EN55014-2 according to the terms of directive 89/336/
EEC with the addition of 92/31/EEC and 93/68/EEC.
The charger comes in different models with different types of electrical plugs. The charg
er with the flat eurocontact is intended for Switzerland.
Börje Maleus, VD
Rostugnsvägen 3
Fax: +46 225 30793
The table shows the length of time for bulk charging.
Battery size
Time (h)
14 3
20 5
60 15
100 25
120 27

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  • das ctek xs 3600 lässt sich nit mit der Mode Taste schalten. Was ist zu tun Eingereicht am 12-12-2021 14:27

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  • Was bedeutet es, wenn die Anzeige Erhaltungsladen kontinuierlich leuchtet und die Anzeige Laden schnell blinkt? Dankeschön! Eingereicht am 7-9-2021 19:11

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  • ctec 3600
    Die MODE Taste reagiert nicht. Was ist zu tun? Eingereicht am 22-4-2021 15:05

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  • Ich möchte eine ausgebaute Motorradbatterie laden. Klemmen an der Batterie sind richtig gepolt angeschlossen u. der Netzstecker am Netz. Beim bedienen des Modeknopfes erfolgt keine Weiterschaltung des Mode Zustandes. Eingereicht am 8-2-2021 14:58

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  • CTEK Multi XS 3600
    Die MODE Taste reagiert nicht. Was ist zu tun? Eingereicht am 15-3-2020 11:51

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  • Kann ich das Batterieladegerät CTEK 12 V Multi XS 3600 über Nacht an meinem C Kls. - Mercedes hägen lassen? Eingereicht am 21-12-2019 15:14

    Antworten Frage melden
  • Beim einschalten des Ladegerätes leuchtet nur der untere Modus. Ein umschalten auf den oberen Modus(Batterieanzeige) ist nicht möglich. Laden funktioniert auch nicht. Eingereicht am 4-12-2019 17:30

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  • werden die Ringkabelschuhe an der Batterie angeklemmt Eingereicht am 13-11-2019 12:37

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  • ctec 3600
    Die MODE Taste reagiert nicht. Was ist zu tun?
    Eingereicht am 31-1-2019 18:36

    Antworten Frage melden
  • Ich habe die Autoatterie an das Ladergerät vorschriftsmäßig angeschlossen (lt. schrftl.Anweisung).. Es leuchtet die Standby Lampe. Beim Drücken der Mode Taste passiert nichts. Ist das Gerät defekt ? Eingereicht am 8-1-2019 18:46

    Antworten Frage melden
  • Ich habe das Ladegerät an plus und minus angeschlossen. Am Ladegerät leuchtet nur
    Standing auf. Auf Mode drückend passiert nichts. Ich kann weder auf die Symbole Krad oder Auto drücken, noch wird etwas an den Batteriesymbolen angezeigt. Was kann ich tun? Es handelt sich um das Ladegerät CTEK XS 3600. Meine Mailadresse ist rainer.marcziniak@gmx.de Mobil 0171/9716132. Bitte schnell antworten, da ich für 3 Monate weg bin und ich das Ladegerät anschließen möchte. Vielen Dank.
    Mit freundlichen Grüßen Rainer Marcziniak Eingereicht am 26-11-2018 15:59

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  • Mein Ladegerät CTEK Multi XS 3600 steht immer auf Standbay Eingereicht am 21-11-2018 14:19

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  • Modus kann nicht eingestellt werden, Gerät bleibt nur im Standy-Modus. Eingereicht am 21-12-2017 15:05

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