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6 • EN

CHARGING PROGRAMS 

Settings are made by pressing the MODE-button. After about two 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

Explanation

NORMAL

Normal battery program

 14.4V/25A. Only for lead-acid 

batteries.

RECOND

Recond program 

15.8V/1.5A

Use Recond to return energy to empty WET and Ca/Ca batteries. 

Recond your battery once per year and after deep dischare to maximise 

lifetime and capacity. The Recond program adds the Recond step to the 

normal battery program. Only for lead-acid batteries.

SUPPLY

Supply program 

13.6V/25A

Use as a 12V power supply or use for float maintenance charging when 

100% capacity of the battery is required. The Supply program activates 

the Float step without time or voltage limitation.   The spark protection 

on the battery charger is disabled during the SUPPLY program.

BATTERY SIZE (Ah)

TIME TO 80% CHARGED

40Ah

1.5h

100Ah

3h

200Ah

6h

300Ah

16h

READY TO USE

The table shows the estimated time to charge a battery from empty to 80%

ERROR LAMP

If the error lamp is lit, check the following:

MODE

RECOND

SUPPLY

NORMAL LITHIUM

PRO

25S

1.  Is the chargers red clamp connected to the battery's 

positive pole? Connect the charger according to the  

vehicles manual.

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

3. Are the clamps short circuited?

4.  Has charging been interrupted in 

 or 

?  

Restart the charger by pressing the MODE-button. If charging is still 

being interrupted, the battery... 

 ...is seriosly sulphated and may need to be replaced. 
 ...can not accept charge and may need to be replaced. 
 ...can not keep charge and may need to be replaced.

POWER LAMP

If the power lamp is lit with a:

MODE

RECOND

SUPPLY

NORMAL LITHIUM

PRO

25S

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 within 2 minutes or the battery 

voltage is below 2V. 

LEAD-ACID

Summary of Contents for PRO25S

Page 1: ... 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...

Page 2: ...ger is disabled during the SUPPLY program BATTERY SIZE Ah TIME TO 80 CHARGED 40Ah 1 5h 100Ah 3h 200Ah 6h 300Ah 16h READY TO USE The table shows the estimated time to charge a battery from empty to 80 ERROR LAMP If the error lamp is lit check the following MODE RECOND SUPPLY NORMAL LITHIUM 1 Is the chargers red clamp connected to the battery s positive pole Connect the charger according to the vehi...

Page 3: ...oltage increases to create controlled gassing in the battery Gassing mixes the battery acid and gives back energy to the battery STEP 7 FLOAT Maintaining the battery voltage at maximum level by providing a constant voltage charge STEP 8 PULSE Maintaining the battery at 95 100 capacity The charger monitors the battery voltage and gives a pulse when necessary to keep the battery fully charged LEAD A...

Page 4: ...imes If the charger doesn t continue to Bulk after that the battery may need to be replaced can not keep charge and may need to be replaced POWER LAMP If the power lamp is lit with a MODE RECOND SUPPLY NORMAL LITHIUM 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...

Page 5: ...acity STEP 3 ABSORPTION Charging with declining current to maximize up to 95 battery capacity STEP 4 ANALYSE Tests if the battery can hold charge Batteries that can not hold charge may need to be replaced STEP 5 COMPLETION Final charge with reduced current STEP 6 MAXIMIZATION Final charge with maximum voltage up to 100 battery capacity STEP 7 FLOAT Maintaining the battery voltage at maximum level ...

Page 6: ...ipple could harm other equipment that is connected to the battery CTEK battery chargers produce very clean voltage and current with low ripple LIMITED WARRANTY CTEK issues this limited warranty to the original purchaser of this product This limited warranty is not transferable The warranty applies to manufacturing faults and material defects The customer must return the product together with the r...

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