CTEK D250S Dual User Manual

10
CONNECTING CONSUMERS
INSTALLATION SHEET 7
SITUATION
Connection of consumers to
the system
PROBLEM
Many batteries die
prematurely if they are
discharged too much. Too
little power might be delivered
to critical consumers, like
navigation, radio and
emergency lights
SOLUTION
Critical consumers are
connected directly to the

refrigerator, main light and
heating are connected to
the SMARTPASS. When
the Service battery is down
to a critical level, then the
SMARTPASS disconnects these
noncritical consumers.
TIP 7
See Tip 1, Tip 2, Tip 4, Tip 5
and Tip 6.
High current consumers
(>80A) should be connected
directly to the Service or
Starter battery
12V
RECOND
RECOND
NIGHT
NORMAL
MODE
D250S DUAL
12V
+OUT
+IN
+IN
+IN +OUT
+OUT
SMARTPASS12V
WARNING!
•Max 22V input
•Do not connect two solar
panels in series

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