CTEK D250S Dual User Manual

8
SOLAR PANELLARGE BATTERY BANK
INSTALLATION SHEET 3 INSTALLATION SHEET 4
SITUATION
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Starter battery and a large
Service battery bank.
PROBLEM
The Starter battery will not be
fully charged and might not
always be able to start the
engine.
SOLUTION
The D250S DUAL recharges
the Starter battery quickly
to 100%, which guarantees
trouble-free engine starts. The
Starter battery will be pulse
maintained directly from the
Solar panel.
TIP 3
Mount the temperature sensor
on the Starter battery.
SITUATION
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panel feeding a Starter battery
and a small Service battery.
PROBLEM
The Service battery will take
a very long time to recharge
due to low alternator voltage.
The Solar panel is difficult
to synchronize with the
alternator. Due to these issues,
the battery will underperform
and die prematurely.
SOLUTION
The D250S DUAL charges
the Service battery quickly
and very efficiently from
both the Alternator and the
Solar panel. The Solar panel
produces at its maximum
power point when the engine
is off. When both the Solar
panel and the Alternator are
on, the Solar panel adjusts
to the Alternator. The battery
will be fully charged, produce
more and last significantly
longer.
TIP 4
See Tip 1 and Tip 2.
D250S DUAL
12V
+OUT
+IN
+IN
D250S DUAL
12V
+OUT
+IN
+IN
WARNING!
- Max 22V input
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