User manual

EN
EN • 9
SOLAR PANELLARGE BATTERY BANK
INSTALLATION SHEET 3 INSTALLATION SHEET 4
SITUATION
Onealternatorfeedinga
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
OnealternatorandaSolar
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 alterna-
tor. 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 pa-
nel. 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