Charging

The MULTI XS 4003 has a fully automatic, eight step charge:

1. Desulphation

   Desulphation with pulses restores sulphated batteries. This is indicated with a fixed beam during this step.

2. Soft start Starting mode for charging cycle.

   The start step continues until the battery terminal voltage has risen above the set value, at which time the charging switches to bulk charge. If the terminal voltage has not reached the set level within a set time, the charge is stopped and the charger indicates error mode. The battery is then probably defective or too large.

3. Bulk Main charge until 80% of the charge is complete.

   The charge is carried out at maximum current charge until the terminal voltage reaches the set level. Bulk charging has a maximum time. The charging then switches to Absorption.

4. Absorption Final part of the charge up to 100%.

   During this step the charge current falls gradually to ensure the terminal voltage does not get too high. If the maximum time for Absorption is exceeded, the charger switches automatically to maintenance.

5. Analysis Tests the self-discharge.

   If the self discharge is too high, the charging is interrupted and error mode indicated.

6. Recond Reconditioning of deeply discharged batteries.

   This step is used to restore deeply discharged open vented batteries. With increased charging voltage over a limited time, the voltage is allowed to rise so that the battery starts to emit gas. As a result you get a mix in the battery that is good both for its capacity and service life. Note that the battery may emit explosive gases during this step. Recond takes place between the analysis and maintenance steps. When choosing the Recond-mode, the charger will first charge your battery up to full-charged. When this is done the charger will start the Recond and the upper Recond-lamp will lit. The charger reconditions the battery between 30 min and 4 hours depending on the need of the battery. Once the recond is done, the charger will switch into maintenance-mode (green light for fully charged). The bottom Recond-lamp will still be on as a reminder that you have chosen the Recond.

7. Maintenance charge –

   Float Charging with constant voltage.

8. Maintenance charge –

   Pulse The state of charge varies between 95% and 100%. The battery receives a pulse when the voltage has dropped to a predefined level. This keeps the battery in trim when not in use. The charger could be connected for months at a time. Check the water level in the battery if possible. The charger measures the terminal voltage continuously to determine whether a charge pulse should be started. If the battery is loaded and/or the terminal voltage drops, the charger starts a charge pulse so that the terminal voltage rises to the set level. The charge pulse is then finished and the cycle is restarted. If the terminal voltage drops even lower, the charger automatically reverts to the beginning of the charge cycle.

Using the MULTI XS 4003 gives your battery an optimum service life and operational reliability.

Batteries

The MULTI XS 4003 model offer several alternative settings to suit specific charging needs and required functionality. The following recommendations should only be regarded as guidelines. Please observe the battery manufacturer recommendations in the event of uncertainty. Settings are made by pressing the “MODE-button” and stepping forward one press at a time until the required mode is reached, the button is then released. After about two seconds the charger activates the selected mode. The selected mode setting will be restored next time the charger is connected.

Temperature

The chargers are protected against overheating. The power reduces when the ambient temperature increases. The charger may be perceived as being hot during charging. This is completely normal, although you should avoid placing it on a sensitive surface.

Technical specifications

• Input voltage AC 220-240VAC, 50-60Hz
• Output voltage Nominal: 12V
• Efficiency 85%
• Charging voltage 14.4V/0.8A, 14.4V/4A, 14.7V/4A
• Charging current 4A
• Back current drain* <1Ah / per month
• Ripple** 240mVp-p, 16mAp-p
• Ambient temperature -20°C to +50°C, output power is reduced automatically at higher temperatures.
• Type of charger 8 step, fully automatic switch mode with pulse maintenance.
• Type of batteries 12V lead-acid batteries (Wet, MF, AGM, Calcium/Calcium and GEL)
• Battery capacity 1.2 -140Ah
• Dimensions (L x W x H) 168x65x38mm
• Insulation IP 65 (splash and dust proof), outdoor use
• Weight 0.6kg

*) Back current drain is the current that drains the battery if the charger is not connected to the mains. CTEK chargers has 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.

Mounting

The charger is easily fitted in place using two screws. The diameter of the mounting holes is 4.5mm

Equipment

The MULTI XS 4003 is delivered with two different battery leads, one with clamps and one with eyelet terminals, all colour coded for easy +/- identification.