CTEK MXS 3.8 User Manual

MANUAL

12V/3.8A

MXS 3.8

CONGRATULATIONS

on the purchase of your new professional switch mode battery charger. This charger is
included in a series of professional chargers from CTEK SWEDEN AB and represents the
latest technology in batter y charging.

SUPPLY PLUG*

CTEK COMFORT CONNECT

CHARGE CABLE

CTEK COMFORT CONNECT – clamp

CTEK COMFORT CONNECT – eyelet M6

* Supply plu gs may d iff er to suit your wall socket.

MAINS CABLE

HOW TO CHARGE

1. Connect the charger to the batter y.

2. Connect the charger to the wall socket. The power lamp will indicate that the mains
cable is connected to the wall socket. The error lamp will indicate if the battery clamps
are incorrectly connected. The reverse polarity protection will ensure that the battery
or charger will not be damaged.

3.Press the MODE-button to select charging program.

4. Follow the 7-step display through the charging process.
The battery is ready to start the engine when STEP 4 is lit.
The battery is fully charged when STEP 6 is lit.

5. Stop charging at any time by disconnecting the mains cable from the wall socket.

FULLY CHARGEDREADY TO USE

ERROR LAMP

POWER LAMP

MODE BUTTON

MODE

SMALL

BATTERY

PROGRAM

NORMAL

BATTERY

PROGRAM

COLD

WEATHER

PROGRAM

EN

EN • 3

CHARGING PROGRAMS

Settings are made by pressing the MODE-button. After about t wo seconds the charger
activates the selected program. The selected program will be restarted next time the
charger is connected.

The table explains the different Charging Programs:

Program

4 • EN

Battery

Size (Ah)

1. 2–14 Ah

14–13 0 A h

14–13 0 A h

Explanation Temp range

Small battery program

14.4V/0.8A
Use for smaller batteries.

Normal bat ter y program

14.4V/3.8A

Use for WE T batteries, Ca/Ca,
MF, GEL batteries and many
AGM batteries.

Cold weather program

14.7V/3.8A

Use for charging at low tempera­tures and for power AGM batter­ies like Optima and Odyssey.

-2 0°C –+50°C

(-4ºF–122ºF)

+5°C–+5 0°C

(41ºF–122ºF)

-2 0°C –+5°C

(-4ºF–41ºF)

ERROR LAMP

If the error lamp is lit, check the following:

1. Is the chargers positive lead connected to the battery´s
positive pole?

2. Is the charger connected to a 12V battery?

3. Has charging been interrupted in STEP 1, 2 or 5?

Restart the charger by pressing the MODE- button. If charging is still
being interrupted, the battery...

STEP 1: ...is seriously sulphated and may need to be replaced.
STEP 2 : ...can not accept charge and may need to be replaced.
STEP 5: ...can not keep charge and may need to be replaced.

POWER LAMP

If the power lamp is lit with a:

1. STEADY LIGHT

The mains cable is connected to the wall socket.

2. FLASHING LIGHT:

The charger has entered the energy save mode. This happens if the
charger isn´t connected to the battery in 2 minutes.

READY TO USE

The table shows the estimated time for empt y battery to 80% charge

BATTERY SIZE (Ah)

2Ah

8Ah
20Ah
60Ah
80Ah

TIME TO 80% CHARGED

2h
8h

5h
15h
20h