CTEK D250S Dual Instruction Manual

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STEP 1 DESULPHATION
Detects sulphated batteries. Pulsing current and voltage, removes sulphate from the lead plates of
the battery restoring battery capacity.
STEP 2 BULK
Charging with maximum current until approximately 80% battery capacity.
STEP 3 ABSORPTION
Charging with declining current to maximize up to 100% battery capacity.
STEP 4 FLOAT
Maintaining the battery voltage at maximum level by providing a constant voltage charge.
STEP 5 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.
1
PULSE
DESULPHATION BULK ABSORPTION
1
4
2 3
FLOAT
5
VOLTAGE (V)CURRENT (A)
CHARGING PROGRAM D250S DUAL
The charger starts charging the target battery when the supply voltage exceeds 13.1V for 5 sec (engine on).
The charger stops charging the target battery when the supply voltage drops below 12.8V for 10 sec (engine off).
20015686F D250S Dual + SmartPass, Manual, Print file 001.indd 12 2011-12-20 11:19:39

CTEK D250S Dual Specifications

General

Charging Current	20 A
Operating Temperature	-20°C to +50°C
Protection Class	IP65
Battery Capacity	40–300 Ah
Battery Types	Lead-acid (Wet, MF, AGM, GEL)
Protection Features	Reverse polarity protection, over temperature protection
Input Voltage	11.5-23V, DC
Charging Stages	5-stage, Automatic