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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 |
Warning regarding chemicals known to cause cancer or reproductive toxicity.
Manual contains safety and operating instructions for D250S DUAL and SMARTPASS models.
Key safety guidelines for battery charging, including ventilation, cable use, and damage checks.
Warning about explosive gases generated by batteries and working near them.
Guidelines for personal safety, first aid for acid contact, and eye protection when near batteries.
Warnings against fire, sparks, dropping tools, and removing metal items near batteries.
Use only lead-acid batteries and never charge a frozen battery.
Steps for safely removing battery terminals, turning off accessories, and ensuring ventilation.
Clean battery terminals and add distilled water to the correct level as per manufacturer.
Study manufacturer's precautions and determine battery voltage before charging.
Do not place charger above battery, avoid acid drips, and do not place battery on charger.
Steps to prevent sparks near battery during vehicle installation to avoid explosion.
Steps to prevent sparks near battery during external installation to avoid explosion.
D250S DUAL is not reverse polarity protected; disconnect battery poles before installation.
All boat installations must follow ISO 10133, with specific notes on connections, mounting, and cables.
Overview of D250S DUAL capabilities like multi-step charging, battery separation, and multiple power sources.
Defines Solar Panel, PV panel, and Photovoltaic panel, listing connections.
Defines Alternator Battery, Starter battery, listing connections.
Defines Service Battery and its types, listing connections.
Identifies lamps 1-5 and their meanings: Error, Power, Solar power, Alternator battery, and Service battery lamps.
Details steady glow indications for Power, Alternator battery, Service battery, and Solar panel lamps during normal operation.
Explains error indications for temperature, connection problems, and suggests corrective actions.
Highlights SMARTPASS features like priority charging, battery separation, service battery watch, and over-temperature protection.
Defines Alternator Battery and Starter battery, listing connections.
Defines Service Battery and its types, listing connections.
Defines Consumers and Electrical Equipment, listing connections.
Identifies SMARTPASS lamps 1-6 and their functions.
Explains steady and flashing lamp functions for Power, Alternator battery, and Service battery lamps.
Shows lamp patterns for normal operation, indicating current flow between batteries.
Details error indications for service battery, internal relay, and consumers, with recommended actions.
Steps for attaching the temperature sensor holder and mounting the unit using screws and torque specifications.
Instructions for attaching and mounting cable screws with specified torque.
Provides detailed dimensions for drilling holes for unit mounting.
Describes solar panel issues and the D250S DUAL's MPP tracking solution.
Important warnings on voltage limits, series connections, and boat installation standards.
Addresses charging issues for small service batteries with low alternator voltage and provides a solution.
Provides connection tips for specific alternators and caravan setups, plus voltage warnings.
Discusses starter battery charging issues in large banks and the D250S DUAL solution.
Advises temperature sensor placement and warns about max input voltage.
Covers scenarios with solar panels, alternator, and service battery, detailing synchronization issues and solutions.
Refers to previous tips and warns about max input voltage and solar panel series connections.
Addresses slow charging of large service batteries due to alternator limits and suggests SMARTPASS integration.
Provides connection advice for SMARTPASS/D250S DUAL and warnings about voltage/series connections.
Explains how to charge both service and starter batteries using a 230/110 V charger and SMARTPASS.
Advises connecting charger cables to the service battery and reiterates voltage/series connection warnings.
Discusses premature battery discharge and how SMARTPASS disconnects noncritical consumers.
Advises connecting high current consumers directly to the service or starter battery.
Details the five charging stages: Desulfation, Bulk, Absorption, Float, and Pulse.
Lists minimum cable dimensions (mm²/AWG) for +IN and +OUT connections for D250S/D250S DUAL.
Lists minimum cable dimensions (mm²/AWG) for Lead to ground, Connection Unit, +IN, and +OUT for SMARTPASS.
Details specifications for D250S DUAL including voltage, current, battery types, dimensions, and MPPT.
Details specifications for SMARTPASS including current, battery capacity, dimensions, and weight.
Explains how SMARTPASS uses a temperature sensor to protect the service battery from overheating.
Outlines the 2-year limited warranty, conditions for validity, and exclusions.
Lists patents, designs, and trademarks protecting CTEK products.
Provides contact details for customer support, website, email, phone, and mailing address.
