CTEK MXTS 70 - User Manual

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EN • 3

CONGRATULATIONS

to 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 battery

charging. MXTS 70 is the first charger with multiple adjustable parameters.

MANUAL

• THE CHARGER IS DESIGNED FOR CHARG-

ING ONLY FOR BATTERIES ACCORDING TO

THE TECHNICAL SPECIFICATION. DO NOT

USE THE CHARGER FOR ANY OTHER PUR-

POSE. ALWAYS FOLLOW BATTERY MANU-

FACTURERS RECOMMENDATIONS.

• NEVER TRY TO CHARGE NON RECHARGE-

ABLE BATTERIES.

• CHECK THE CHARGER CABLES PRIOR TO

USE. ENSURE THAT NO CRACKS HAVE

OCCURRED IN THE CABLES OR IN THE

BEND PROTECTION. A CHARGER WITH

DAMAGED CORD MUST BE RETURNED

TO THE RETAILER. A DAMAGED MAINS

CABLE MUST BE REPLACED BY A CTEK

REPRESENTATIVE.

• NEVER CHARGE A DAMAGED BATTERY.

• NEVER CHARGE A FROZEN BATTERY.

• NEVER PLACE THE CHARGER ON TOP OF

THE BATTERY WHEN CHARGING.

• ALWAYS PROVIDE FOR PROPER VENTILA-

TION DURING CHARGING.

• AVOID COVERING THE CHARGER.

• A BATTERY BEING CHARGED COULD EMIT

EXPLOSIVE GASSES. PREVENT SPARKS CLOSE

TO THE BATTERY. WHEN BATTERIES ARE

REACHING THE END OF THEIR LIFECYCLE

INTERNAL SPARKS MAY OCCUR.

SAFETY

• ALL BATTERIES FAIL SOONER OR LATER. A

BATTERY THAT FAILS DURING CHARGING IS

NORMALLY TAKEN CARE OF BY THE CHARG-

ERS ADVANCED CONTROL, BUT SOME

RARE ERRORS IN THE BATTERY COULD STILL

EXIST. DON’T LEAVE ANY BATTERY DURING

CHARGING UNATTENDED FOR A LONGER

PERIOD OF TIME.

• ENSURE THAT THE CABLING DOES NOT

JAM OR COMES INTO CONTACT WITH HOT

SURFACES OR SHARP EDGES.

• BATTERY ACID IS CORROSIVE. RINSE IMME-

DIATELY WITH WATER IF ACID COMES INTO

CONTACT WITH SKIN OR EYES, SEEK IMME-

DIATE MEDICAL ADVICE.

• ALWAYS CHECK THAT THE CHARGER HAS

SWITCHED TO STEP 7 BEFORE LEAVING THE

CHARGER UNATTENDED AND CONNECTED

FOR LONG PERIODS. IF THE CHARGER

HAS NOT SWITCHED TO STEP 7 WITHIN

55 HOURS, THIS IS AN INDICATION OF

AN ERROR. MANUALLY DISCONNECT THE

CHARGER.

• BATTERIES CONSUME WATER DURING USE

AND CHARGING. FOR BATTERIES WHERE

WATER CAN BE ADDED, THE WATER LEVEL

SHOULD BE CHECKED REGULARLY. IF THE

WATER LEVEL IS LOW ADD DISTILLED WATER.

• THIS APPLIANCE IS NOT DESIGNED FOR USE

BY YOUNG CHILDREN OR PEOPLE WHO CAN-

NOT READ OR UNDERSTAND THE MANUAL

UNLESS THEY ARE UNDER THE SUPERVISION

OF A RESPONSIBLE PERSON TO ENSURE THAT

THEY CAN USE THE BATTERY CHARGER SAFELY.

THIS APPLIANCE CAN BE USED BY CHILDREN

AGED FROM 8 YEARS AND ABOVE AND PER-

SONS WITH REDUCED PHYSICAL, SENSORY

OR MENTAL CAPABILITIES OR LACK OF EXPE-

RIENCE AND KNOWLEDGE IF THEY HAVE

BEEN GIVEN SUPERVISION OR INSTRUC-

TION CONCERNING USE OF THE APPLIANCE

IN A SAFE WAY AND UNDERSTAND THE

HAZARDS INVOLVED. CHILDREN SHALL NOT

PLAY WITH THE APPLIANCE. CLEANING AND

USER MAINTENANCE SHALL NOT BE MADE

BY CHILDREN WITHOUT SUPERVISION.

• CONNECTION TO THE MAINS SUPPLY

MUST BE IN ACCORDANCE WITH THE

NATIONAL REGULATIONS FOR ELECTRICAL

INSTALLATIONS.

• THE CHARGER MUST ONLY BE CONNECTED

TO AN EARTHED SOCKET OUTLET.

• THE CHARGER IS DESIGNED FOR INDOOR

USE. DO NOT EXPOSE TO RAIN OR SNOW.

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Summary

Indicator Lamps, Displays and Error Codes

Indication Lamps

Details on indicator lamps for charging status and operation.

Display Information

Information displayed on the charger during setup and operation.

Error Codes

List and explanation of error codes indicating faults.

Charging Program Details

Program Explanations

Explanation of different charging programs for various battery types.

Technical Specifications

Key technical specifications of the charger model.

Summary

Indicator Lamps, Displays and Error Codes

Indication Lamps

Details on indicator lamps for charging status and operation.

Display Information

Information displayed on the charger during setup and operation.

Error Codes

List and explanation of error codes indicating faults.

Charging Program Details

Program Explanations

Explanation of different charging programs for various battery types.

Technical Specifications

Key technical specifications of the charger model.

This document describes the CTEK MXTS 70, a professional switch mode battery charger designed for various lead-acid battery types.

Function Description

The MXTS 70 is an advanced battery charger that offers both charging and power supply functionalities. It features an 8-step fully automatic charging cycle, ensuring optimal charging for different battery conditions. The charger can detect sulphated batteries and apply a pulsing current and voltage to remove sulfates, restoring battery capacity (Desulphation). It performs a soft start to test if the battery can accept a charge, preventing charging of defective batteries. The bulk charging step charges the battery with maximum current up to approximately 80% capacity, followed by an absorption phase that charges with declining current to maximize capacity up to 100%. An analysis step tests if the battery can hold a charge, indicating if replacement is needed for batteries that cannot. For Ca/Ca batteries or deeply discharged batteries, a recondition step is available, increasing voltage to create controlled gassing, mixing battery acid, and returning energy to the battery. The charger then enters a float stage, maintaining battery voltage with a constant voltage charge, and finally a pulse stage, monitoring battery voltage and providing pulses to keep the battery fully charged at 95-100% capacity.

Beyond charging, the MXTS 70 can also function as a power supply, providing a constant voltage and adjustable current limit for vehicle systems or float maintenance. This mode allows users to set specific voltage and current parameters from the front panel.

The charger incorporates several safety features, including reverse polarity protection, which prevents damage if battery clamps are incorrectly connected. It also monitors for over-voltage, battery overheating, low battery voltage in supply mode, high current in supply mode, and over-voltage protection, indicating errors through dedicated lamps and display codes. A temperature sensor automatically adjusts charging voltage to optimize charge at ambient temperature.

Important Technical Specifications

Model number: 1045
Rated Voltage AC: 220-240VAC, 50-60Hz
Charging voltage:
- Normal: 14.4V/28.8V
- Max: 15.8V/31.6V
- Supply: 13.6V/27.2V, 14.0V/28.0V, 14.4V/28.8V, 14.8V/29.6V
Start voltage: 2.0V
Output current: Max 50A; 70A in supply (12V)
Current, mains: Max 7.2Arms (at full charging current in 24V)
Back current drain*: <1Ah/month
Ripple**: <4% of actual DC current
Ambient temperature: -20°C to +50°C (-4°F to +122°F)
Charger type: 8 step fully automatic charging cycle
Battery types: All types of 12V and 24V lead-acid batteries (WET, MF, Ca/Ca, AGM and GEL).
Battery capacity: 20Ah-1500Ah
Dimensions: 338x178x80mm (L x W x H)
Insulation class: IP20
Weight: 3.3kg, without cables
Warranty: 2 years

*Back current drain is the current that drains the battery if the charger is not connected to the mains. CTEK chargers have a very low back current. **The quality of the charging voltage and charging current is very important. A high current ripple heats up the battery which has an aging effect on the positive electrode. High voltage ripple could harm other equipment that is connected to the battery. CTEK battery chargers produce very clean voltage and current with low ripple.

Usage Features

The MXTS 70 offers a user-friendly interface with a MODE-button to select charging programs (NORMAL, AGM, Ca/Ca, BOOST, SUPPLY) and a SET-button to adjust parameters like voltage, current, and temperature compensation. The display provides real-time indications of output voltage, current, elapsed charging time, and error codes.

Charging Programs:

NORMAL: For GEL, WET, and MF batteries (20-1500Ah).
AGM: For most AGM batteries; some AGM may require lower voltage (NORMAL Mode) (20-1500Ah).
Ca/Ca: For Ca/Ca batteries, maximizing charge with minimum fluid loss, including a RECOND step (20-1500Ah).
BOOST: For recovery of stratified batteries (20-1500Ah).
SUPPLY: For power supply or float maintenance charging when 100% capacity is required; activates step 7 without time or voltage limitation (20-1500Ah).

Parameter Adjustment: Users can select voltage (12V/24V), current (10A to 70A, depending on setting), and activate temperature compensation. The charger provides estimated charging times for various battery sizes and charging currents.

Connectivity: The charger uses a cord set with female connectors for battery connection, a charger cable with male connectors for battery clamps (or eyelets M8), and a mains cable for power. A USB Type B contact is available for downloading customized charging programs, but not for mobile phone charging.

Mounting: The charger can be permanently mounted on a firm surface using screws, ensuring adequate space for air cooling.

Maintenance Features

The MXTS 70 requires minimal maintenance. Users should regularly check the charger cables for cracks or damage and ensure the bend protection is intact. A damaged cord must be returned to the retailer, and a damaged mains cable must be replaced by a CTEK representative.

For batteries where water can be added, the water level should be checked regularly, and distilled water added if the level is low.

The charger is sealed, and opening it or damaging the seal will void the warranty. Cleaning and user maintenance should not be performed by children without supervision.

The device is designed for indoor use and should not be exposed to rain or snow.