CTEK PRO25S User Manual

EN • 5
MANUAL
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 battery charging.
MODE
RECONDSUPPLYNORMAL LITHIUM
PRO25S
LITHIUM
PROGRAM
ERROR
LAMP
RECOND
PROGRAM
SUPPLY
PROGRAM
NORMAL
BATTERY
PROGRAM
HOW TO CHARGE
1. Connect the charger to the battery.
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 indication lamps through the charging process.
The battery is ready to start the engine when is lit.
The battery is fully charged when is lit.
5. Stop charging at any time by disconnecting the mains cable from the wall socket.
MODE-
BUTTON
POWER
LAMP
For batteries mounted inside a vehicle
1. Connect the charger according to the
vehicles manual.
2. Connect the charger to the wall socket.
3. Disconnect the charger from the wall socket
before disconnecting the battery.
4. Disconnect the black clamp before the red
clamp.
1 2
Read safety instruction
READY TO USE
EMPTY
CHARGING
FULLY CHARGED
+
–
Temperature sensor
The temperature sensor works automatically
and will adjust the voltage to the ambient
temperature. Place the temperature sensor
in the positive clamp or as the close to the
battery as possible.

CTEK PRO25S Specifications

General

Output Voltage	12V
Charging Current	25A
Operating Temperature	-20°C to +50°C
Protection Class	IP44
Battery Types	AGM, EFB, GEL
Charging Voltage	14.4V/14.7V/15.8V
Dimensions	235 x 130 x 65 mm
Protection Features	Reverse polarity protection
Charging Modes	Normal, Recond
Battery Capacity	40-500Ah

Summary

How to Charge Battery

Charging Batteries Mounted Inside a Vehicle

Instructions for connecting the charger to a vehicle's battery when mounted internally.

Connecting and Charging Process

Steps for connecting the charger to the wall socket and initiating the charging process.

Charging Status Indicators

Explanation of indicator lamps for battery readiness and full charge.

Lead-Acid Battery Charging Programs

Normal, Recond, and Supply Programs

Details on Normal, Recond, and Supply charging programs for lead-acid batteries.

Power Lamp Status Indicators

Interpreting the steady and flashing states of the power lamp.

Error Lamp Troubleshooting

Diagnosing issues indicated by the error lamp, including clamp connections and battery compatibility.

Lead-Acid Charging Steps

Detailed explanation of the 8-step charging process for lead-acid batteries.

Lithium Battery Charging Programs

Lithium and Supply Programs

Specific charging programs for Lithium batteries and the Supply program.

Under Voltage Protection Bypass

Methods to bypass Lithium battery's Under Voltage Protection for charging.

Lithium Power and Error Lamp Status

Understanding power lamp states and troubleshooting error lamp conditions for Lithium batteries.

Lithium Charging Steps

Explanation of the 8-step charging process tailored for Lithium batteries.

Ready to Use Battery Charging Times

Estimated Time to 80% Charge

Table showing estimated charging times for various battery sizes to reach 80% capacity.

Technical Specifications and Warranty

Product Technical Specifications

Detailed specifications including input/output, voltage, capacity, and warranty period.

Limited Warranty Information

Details on the limited warranty, its terms, and conditions for the product.

Product Support Resources

Information on how to get support, FAQs, and access the latest manual.