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8 • EN

TECHNICAL SPECIFICATIONS

Model number

1087

Rated Voltage AC

220–240VAC, 50–60Hz

Charging voltage

14.4V, 

 15.8V,  

 14.2V

Min battery voltage

Lead-acid: 2.0V, Lithium: 5.0V

Charging current

2.3A max

Current, mains

0.3A

rms

 (at full charging current)

Back current drain*

<1.5Ah/month

Ripple**

<4%

Ambient temperature

-20°C to +50°C

Charger type 

8 step, fully automatic charging cycle

Battery types

All types of 12V Lead Acid batteries (WET, MF, Ca/Ca, AGM, 

GEL)

12V (4cells) Lithium batteries (LiFePO

4

, LiFe, Li-iron, LFP)

Battery capacity

5–25Ah

Dimensions

168 x 65 x 38mm (L x W x H) 

Insulation class

IP65

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 cur-

rent 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.

LIMITED WARRANTY 

CTEK SWEDEN AB, 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 for 5 years from the date of purchase. The customer must return the 

product together with the receipt of purchase to the point of purchase. This warranty is void 

if the battery charger has been opened, handled carelessly or repaired by anyone other 

than CTEK SWEDEN AB or its authorised representatives. One of the screw holes in the 

bottom of the charger is sealed. Removing or damaging the seal will void the warranty. 

CTEK SWEDEN AB makes no warranty other than this limited warranty and is not liable 

for any other costs other than those mentioned above, i.e. no consequential damages. 

 Moreover, CTEK SWEDEN AB is not obligated to any other warranty other than this 

warranty.

SUPPORT

 

CTEK offers a professional custom support: 

www.ctek.com

.  

For latest revised user manual see www.ctek.com. By e-mail: 

[email protected]

,

  

by telephone: +46(0) 225 351 80, by fax +46(0) 225 351 95.

50020345B

Summary of Contents for 1087

Page 1: ...ndicate that the mains cable is connected to the wall socket The power lamp will blink if the battery clamps are incorrectly connected The reverse polarity protection will ensure that the battery or charger will not be damaged RECOND LITHIUM NORMAL NORMAL BATTERY PROGRAM ERROR LAMP RECOND OPTION FULLY CHARGED LITHIUM BATTERY PROGRAM POWER LAMP MODE BUTTON 3 Press the MODE button to select charging...

Page 2: ... 10Ah 4h 15Ah 6h 20Ah 7h 25Ah 9h POWER LAMP If the power lamp is lit with a 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 can t detect a battery in 2 minutes ERROR LAMP If the error lamp is lit check the following 1 Polarity error Is the charger s positive lead connected to the positive charg...

Page 3: ...ed STEP 6 RECOND Choose the Recond program to add the Recond step to the charging process During the Recond step voltage 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 ...

Page 4: ...VP During the wake up period the LED CHECK will flash until the charge program is started and the LED CHECK is lit with a steady light If the manual wake up is unsuccessful the power LED will start to flash after latest 10 minutes Disconnect any parallel loads from the battery and try again If the charging does not start after that the battery may need to be replaced POWER LAMP If the power lamp i...

Page 5: ...d STEP 6 Not applicable 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 to keep the battery fully charged LITHIUM 1 2 3 4 5 6 7 8 14 4V Max 14 2V 1 0A Max 14 2V 2 3A Max 14 2V Voltage limit 12 0V Max 13 3V 2 3A Max 13 8V 2 3A Pulse ...

Page 6: ... to the battery CTEK battery chargers produce very clean voltage and current with low ripple LIMITED WARRANTY CTEK SWEDEN AB 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 for 5 years from the date of purchase The customer must return the product together with the rec...

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