AB Soft XT 14000, XS 25000 User Manual
Switch mode
BATTERY CHARGER
UK
For lead-acid batteries
MULTI XS 25000
XS 25000
MULTI XT 14000
XT 14000
User Manual and Guide to professional charging of
starter and deep cycle batteries.
INTRODUCTION
Congratulations on purchasing your new CTEK professional switch mode battery charger. This charger is part of a range of
professional battery chargers from CTEK SWEDEN AB. It represents the latest technology in battery charging with charging and
analysis in eight steps with temperature compensation. Read this User Manual and follow the instructions carefully before
using your new charger.
SAFETY
• The charger is designed to charge lead acid batteries. Do not use the charger for any other purpose.
• Wear protective goggles and turn your face away when connecting or disconnecting the battery!
• During charging, the battery may emit explosive gases. Therefore it is essential to avoid any sparks in the immediate vicinity.
• Ensure good ventilation when charging.
• The charger should not be covered.
• Battery acid is corrosive. If any acid comes into contact with skin or eyes, rinse immediately with plenty of water and seek
immediate medical attention.
• Never charge a frozen battery.
• Never charge a damaged battery.
• When using outdoors the charger has to be positioned horizontally with the long side or top side turned up.
• Do not place charger on top of the battery when charging.
• Always check that the charger has switched to maintenance charging before leaving it unsupervised and connected for
prolonged periods of time. If the charger has not switched to maintenance charging within three (3) days, this is an indication of a
fault. The charger must then be manually disconnected.
• All batteries have a limited lifetime. Any battery failure during charging is normally dealt with by the charger’s advanced control,
but a battery could develop unusual faults. Do not leave the charger unsupervised for long periods.
CHARGING
Connecting the charger to a battery fitted in a vehicle
1. The power cord should be disconnected when connecting or disconnecting the battery leads.
2. Identify the battery terminal that is grounded (connected to the chassis). The negative terminal is normally the grounded post.
3. Charging a negatively grounded battery. Connect the red cable to the positive terminal on the battery and the black cable to
good metal engine ground away from the battery. Ensure you do not connect the black cable to fuel lines or sheet-metal body
parts.
4. Charging a positively grounded battery. Connect the black cable to the negative terminal on the battery and the red cable to
good metal engine ground away from the battery.
parts.
Connecting the charger to an out of vehicle battery:
1. The power cord should be disconnected when connecting or disconnecting the battery leads.
2. Connect the red cable to the positive terminal on the battery and the black cable to the negative terminal.
If the battery leads have been connected incorrectly, the
nor the battery are damaged.
Start charging
1. Connect the charger´s AC cord to an AC Power Supply. The charger will indicate POWER, yellow indication lamp (B).
2. The lamp for completely discharged battery (1) will illuminate if the battery’s voltage is less than 12 V for MULTI XS 25000 and
XS 25000 or 24 V for MULTI XT 14000 or XT 14000.
3. Normal charging will be indicated by the following lights: completely discharged battery (1), bulk charging (2), absorption
charging (3) or maintenance charging (4). When the maintenance charging lamp illuminates the battery is fully charged. Charging will start if the voltage drops. The charger can normally be connected for months. Reconditioning (only on MULTI XS 25000
and MULTI XT 14000) is indicated by the lamp (5) illuminating.
4. If the battery leads have been connected incorrectly, the reverse polarity protection system will ensure that neither the charger
nor the battery are damaged.
5. If nothing happens. If the lamp indicating the setting and the power lamp remain lit but no other lamp illuminates, the connection to the battery or chassis may be poor or the battery may be faulty. Another cause may be a lack of voltage in the AC Power
Supply. Begin by improving the connection between the battery and charger.
6. Charging can be stopped at any time by disconnecting the charger’s AC cord. Always disconnect the AC cord before disconnecting the battery leads. When you stop charging a battery installed in a vehicle you should always disconnect the battery lead
from the chassis before disconnecting the other battery lead.
Ensure you do not connect the black cable to fuel lines or sheet-metal body
reverse polarity protection system will ensure that neither the charger
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IMPORTANT INFORMATION FOR MULTI XT 14000 and XT 14000 Please note that the battery pack in the 24 V system in most
cases consists of more than one battery. They are linked up to the 24 V
lower voltage. Therefore it is important for the charger to be connected correctly.
system, but the individual batteries generally have a
BATTERY TYPES AND SETTINGS
The XS 25000 and XT 14000 are programmed according to “PROGRAM DESCRIPTION” with fixed settings. MULTI XS 2500
and MULTI XT 14000 can easily be set for different types of batteries or conditions. The following recommendations should,
however, only be seen as guidelines. Please consult the battery manufacturer for further instructions.
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 2 seconds the charger activates the selected mode. The selected mode is saved in a
memory in the charger and remains there even if the charger is disconnected from battery and mains.
NORMAL
SUPPLY
RECOND
NORMAL - Normal setting for wet batteries, maintenance free and for most Gel batteries. Some Gel batteries
prefer a slightly lower charging voltage. Please consult the battery manufacturer when in doubt.
SUPPLY - The charger operates at a constant voltage. This is the maintenance mode for applications where
maximum capacity from the battery is important, like floor sweepers and golf carts. Note that the Spark
protection function is suppressed in this mode.
RECOND - This mode is used to recover deep discharged flooded batteries where you could expect a
stratified acid (high acid weight in the bottom, low on top). Check with battery manufacturer when in doubt.
Use this mode with care, because the high voltage will cause some water loss. 16 V is normally no problem
for electronics in 12 V system, or 32 V in 24 V system. Consult your supplier when in doubt. Life of light
bulbs will be reduced at higher voltage. Try to disconnect light from the battery during this phase. Maximum
effect and minimum risk for electronics is achieved by charging a disconnected battery.
CHARGING PHASES
MULTI XS 25000, XS 25000, MULTI XT 14000 och XT 14000 charges and analyses in eight fully automatic steps.
MULTI XS 25000 and MULTI XT 14000 have three different operating modes, see Battery Types and Settings.
The battery charger has an 8-step fully automatic charging cycle:
Desulphation
Desulphation with pulses recovers sulphated batteries. Indicates with lamp 1.
Soft start (Lamp 1)
Start mode for the charging cycle. The charging current is limited. The start phase continues until the battery’s terminal voltage
has risen above the set limit, at which point the charger switches to bulk charging. If the terminal voltage has not passed the
voltage limit within the time limit, the charger switches to fault mode (lamp 0) and discontinues the charging. If so, the battery is
faulty or its capacity is too large.
Bulk (Lamp 2)
Main charge when 80% of charging takes place. The charger delivers maximum current until the terminal voltage has risen to the
set level. Bulk has a maximum time, at which point the charger automatically switches to Absorption.
Absorption (Lamp 3)
Complete charge up to virtually 100%. The terminal voltage is maintained
successively. Once the current has tapered to the set limit, this phase switches to being timed. If the total time for Absorption
exceeds the time limit the charger automatically switches to maintenance.
Analysis (Lamp 3)
Testing self-discharge. If self-discharge is too high, charging is discontinued and fault mode is indicated.
Maintenance charging - Float (Lamp 4)
Charging at constant voltage.
Maintenance charging - Pulse (Lamp 4)
Charging varies between 95% and 100% state of charge. The battery receives a pulse when the voltage drops and keeps the
battery in perfect condition when it is not in use. The charger can be connected for months at a time. The charger continuously
measures the terminal voltage to determine whether a charging pulse should be initiated. If the battery is loaded and/or the
battery’s terminal voltage drops the charger starts a charging pulse until the terminal voltage reaches the set level. The charging pulse is then discontinued and the cycle is repeated infinitely.
automatically goes back to the beginning of the charging curve.
at the set level. During this phase the current tapers
If the terminal voltage drops below a lower limit, the charger
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