CTEK D250S DUAL Instruction Manual

MANUAL
CONGRATULATIONS
on the purchase of your new CTEK professional battery management unit. This unit is part of a
range of professional battery chargers from CTEK SWEDEN AB. It represents the latest technology
in battery charging. Using the CTEK D250S DUAL and SMARTPASS products, you can maximize
the performance of your 12VDC source.
SAFETY
• The unit is designed for 12V lead-acid batteries. Do not use the unit for any other batteries.
• Use safety glasses when connecting or disconnecting a battery.
• Battery acid is corrosive. Rinse immediately with water if acid comes into contact with skin or
eyes. Seek medical advice.
• Make sure that the cables are not being pinched and are not in contact with warm surfaces or
sharp edges.
• While charging, a battery can emit explosive gases; avoid sparks in the immediate area.
• Always provide for proper ventilation during charging.
• Avoid covering the unit.
• D250S DUAL is not reverse polarity protected.
• Disconnect battery poles before installation
All installations on boats must follow ISO 10133. Please note!
1. Connections from the battery must be fused close to the battery.
2. Batteries must be permanently mounted in ventilated areas.
3. Cables must be placed in tubes, separated from cables for 230V (shore power), or be attach to
the surface every 300mm.
4. Cables in the engine room must be rated to withstand 700C
20015686F D250S Dual + SmartPass, Manual, Print file 001.indd 3
D250S DUAL
The D250S DUAL has 2 inputs. The Service battery will be charged from the alternator, solar
panel, or both in combination. The solar panel adjusts itself to the Starter battery voltage. The
Starter battery will be charged and maintained directly by the solar panel if the Service battery
is fully charged.
D250S DUAL

FEATURES:

• Multi-step 20A temperature compensated battery charging and battery maintenance.
• Battery separation of Starter and Service batteries.
• Maximum power point tracking for solar panels charging the Service battery.
• Two power source inputs (alternator, solar, wind, Supply battery and other).
• Coordination of the two inputs, allowing parallel operation.
• The solar input will also charge and maintain the Starter battery.
• Built in battery guard for the starter battery.
Solar panel + Vehicle ground/Solar panel –
+IN
D250S DUAL
+IN
Alternator battery + Service battery +
Temperature sensor
L:2m
12V
+OUT
2011-12-20 11:19:31
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