CTEK SMARTPASS - Manual (Page 23)

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TEChNICAL SPECIFICATIONS
Charger model D250S DUAL SMARTPASS
Model number D250S Dual, 1044 SMARTPASS, 1058
Max input voltage 23 V 23 V
Charging voltage 14.4 V at 25°C/77°F temperature compensated –
Charging current 20 A 80 A
Back current drain Less than 1Ah/month Less than 1Ah/month
Ripple* Less than 4% –
Ambient temperature -20°C to +50°C (-4°F to -122°F),
output power is reduced automatically at high temperatures
Charger type 5-step fully automatic charging –
Battery types All types of 12 V lead-acid batteries (WET, MF, Ca/Ca, AGM and GEL)
Battery capacity 40–300 Ah 28–800 Ah
Dimensions 197 x 93 x 49 mm (7¾ x 3⅝ x 2 inches) L x W x H
Insulation class IP65 (splash and dust proof)
weight 0.73 kg/1,6 lbs 0.74 kg/1,6 lbs
MPPT** Yes –
*) The quality of the charging voltage and charging current are very important. High current ripple heats the battery and ages
the positive electrode. High voltage ripple can damage other equipment connected to batteries. The battery chargers from CTEK
produce very high-quality voltage and current with low ripple
**) MPPT (Maximum Power Point Tracking) finds the best combination of supply current and voltage to maximize the power out-
put. This is especially important for Photovoltaic (Solar) Panels and trailer campers with wiring constraints.